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gunjan_iocl
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Practice Questions Chat 10 May 2023, 06:17
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gunjan_iocl
E
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sorry C woul dbe the answer. did not reckon x can be a fraction value too
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Saakshi2407
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Practice Questions Chat Updated on: 10 May 2023, 23:00
Originally posted by Saakshi2407 on 10 May 2023, 22:57.
Last edited by Saakshi2407 on 10 May 2023, 23:00, edited 2 times in total.
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mysterymanrog
Take note that it states m and n are non negative integers. In other words, m and n can be 0,1,2.... Also note that any number with 5 in tbe units digit will always have 5, if it taised to a positive power. The same applies to 6 (always 6 if pos power). Statement 1 is a trap. Consider the case of m=0, n=3. We would have units digit of 6. But if m=2, n=3, unjts digit of 1. Statement 2 works. It will always be 1 units digit since it will be 5+6 in the units place. B.
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How about a fraction power? 1/2 power will be 2.xx; 1/3 will be 1.xx for both 5 & 6 considering 2^2 = 4 & 2^3 = 8; 6 lies between 5&6 lie between 4&8

C

*Lies between 4&8 for both 5&6
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Practice Questions Chat Updated on: 11 May 2023, 01:38
Originally posted by gmatophobia on 11 May 2023, 01:27.
Last edited by gmatophobia on 11 May 2023, 01:38, edited 3 times in total.
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gmatophobia
DS Question 1 - May 10 If m and n are non-negative integers, what is the units digit of 5^m + 6^n? (1) m + n > 2 (2) mn > 0 Source: GMAT Club Tests | Difficulty: Medium
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B

gmatophobia
PS Question 1 - May 10 Which of the following is/are true? I. |3x - 19| > 5 - x holds for all values of x. II. There is no value of x for which |2x - 10| < 4 - x holds. III. -|5x - 23| is negative for all values of x. A. None B. I only C. I and II only D. I and III only E. I, II and III Source: Expert’s Global | Difficulty: Hard
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C

DS Question 1 - May 11

Is |2a − 3b| < |a − b| + |a − 2b|?

(1) b = 3
(2) a < b

Source: Others | Difficulty: Hard

DS Question 1 - May 11

A rectangular solid, x by y by z, is inscribed in a sphere, so that all eight of its vertices are on the sphere. If x, y and z are positive integers, and the radius of the sphere is √14/2, what is the volume of the rectangular solid?

A. 6
B. 11
C. 12
D. 18
E. 22

Source: GMAT Club Test | Difficulty: Hard

PS Question 1 - May 11

A rectangular solid, x by y by z, is inscribed in a sphere, so that all eight of its vertices are on the sphere. If x, y and z are positive integers, and the radius of the sphere is √14/2, what is the volume of the rectangular solid?

A. 6
B. 11
C. 12
D. 18
E. 22

Source: GMAT Club Test | Difficulty: Hard
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gunjan_iocl
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gmatophobia
DS Question 1 - May 11 Is |2a − 3b| < |a − b| + |a − 2b|? (1) b = 3 (2) a < b Source: Others | Difficulty: Hard
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can someone explain solution to thi
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Piyush1105
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Practice Questions Chat Updated on: 11 May 2023, 04:42
Originally posted by Piyush1105 on 11 May 2023, 04:40.
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It is based on the modulus concept:
Equality will hold if (a-b) & (a-2b) are of the same sign. If (a-b) & (a-2b) are of different sign then LHS=RHS. So, basically, we have to find relative sign of (a-b) & (a-2b).

(1) b=3 so. (a-3) and (a-6) Now depending on value of a both quantities can be -,- ; +,- ; or +, +.
So we don’t know hence, options D and A ruled out

(2) (a-b) < 0 But. (a-2b) can be both positive and negative depending on value of b. So, option B ruled out.

(Combined) Given (a-3) < 0. So (a-6) will also be negative. Implies both quantities are negative which means equality will hold. So, we have an answer.

I think answer is (C) 😊

It is based on the modulus concept:
Equality will hold if (a-b) & (a-2b) are of the same sign. If (a-b) & (a-2b) are of different sign then LHS < RHS. So, basically, we have to find relative sign of (a-b) & (a-2b).

(1) b=3 so. (a-3) and (a-6) Now depending on value of a both quantities can be -,- ; +,- ; or +, +.
So we don’t know hence, options D and A ruled out

(2) (a-b) < 0 But. (a-2b) can be both positive and negative depending on value of b. So, option B ruled out.

(Combined) Given (a-3) < 0. So (a-6) will also be negative. Implies both quantities are negative which means equality will hold. So, we have an answer.

I think answer is (C) 😊

*Correction
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Practice Questions Chat Updated on: 11 May 2023, 10:47
Originally posted by wickedvikram on 11 May 2023, 10:39.
Last edited by wickedvikram on 11 May 2023, 10:47, edited 1 time in total.
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gmatophobia
DS Question 1 - May 11 Is |2a − 3b| < |a − b| + |a − 2b|? (1) b = 3 (2) a < b Source: Others | Difficulty: Hard
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B

gmatophobia
PS Question 1 - May 11 A rectangular solid, x by y by z, is inscribed in a sphere, so that all eight of its vertices are on the sphere. If x, y and z are positive integers, and the radius of the sphere is √14/2, what is the volume of the rectangular solid? A. 6 B. 11 C. 12 D. 18 E. 22 Source: GMAT Club Test | Difficulty: Hard
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A

gunjan_iocl
can someone explain solution to thi
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stmt 1: b=3
you will get 4 intervals. a<3, 3<a<4.5, 4.5<a<6, a>6
eqn will be false for a<3 & a>6 and true for 3<a<4.5, 4.5<a<6
Not sufficient
stmt 2 a<b; eqn will be always false; sufficient
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Piyush1105
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gmatophobia
DS Question 1 - May 11 Is |2a − 3b| < |a − b| + |a − 2b|? (1) b = 3 (2) a < b Source: Others | Difficulty: Hard
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What is the correct answer?
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wickedvikram
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Piyush1105
What is the correct answer?
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C is the right answer. There is detailed discussion in the forum by various experts.
is-2a-3b-a-b-a-2b-1-b-3-2-a-b-136682.html
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gmatophobia
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Practice Questions Chat Updated on: 12 May 2023, 23:52
Originally posted by gmatophobia on 12 May 2023, 23:46.
Last edited by gmatophobia on 12 May 2023, 23:52, edited 3 times in total.
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gmatophobia
DS Question 1 - May 11 Is |2a − 3b| < |a − b| + |a − 2b|? (1) b = 3 (2) a < b Source: Others | Difficulty: Hard
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C

gmatophobia
PS Question 1 - May 11 A rectangular solid, x by y by z, is inscribed in a sphere, so that all eight of its vertices are on the sphere. If x, y and z are positive integers, and the radius of the sphere is √14/2, what is the volume of the rectangular solid? A. 6 B. 11 C. 12 D. 18 E. 22 Source: GMAT Club Test | Difficulty: Hard
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A

PS Question 1 - May 13[b]

Joan spent $10 to buy at least one piece each of apples and oranges at a store where each apple cost $2 and each orange cost $1. How many apples did she buy?

(1) She spent more than $6 on buying oranges

(2) She spent less than $10 on buying oranges

Source: eGMAT | Difficulty: Medium

[b] DS Question 1 - May 13

Joan spent $10 to buy at least one piece each of apples and oranges at a store where each apple cost $2 and each orange cost $1. How many apples did she buy?

(1) She spent more than $6 on buying oranges

(2) She spent less than $10 on buying oranges

Source: eGMAT | Difficulty: Medium

PS Question 1 - May 13

If X > X / |X| , Which of the following gives solution set of integer X?
A. X > 1
B. X > -1
C. |X| < 1
D. |X| = 1
E. |X|^2 > 1

Source: Others | Difficulty: Medium
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Practice Questions Chat Updated on: 13 May 2023, 00:13
Originally posted by AbhinavKumar on 13 May 2023, 00:10.
Last edited by AbhinavKumar on 13 May 2023, 00:13, edited 1 time in total.
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gmatophobia
DS Question 1 - May 13 Joan spent $10 to buy at least one piece each of apples and oranges at a store where each apple cost $2 and each orange cost $1. How many apples did she buy? (1) She spent more than $6 on buying oranges (2) She spent less than $10 on buying oranges Source: eGMAT | Difficulty: Medium
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option A , she bought one apple

gmatophobia
PS Question 1 - May 13 If X > X / |X| , Which of the following gives solution set of integer X? A. X > 1 B. X > -1 C. |X| < 1 D. |X| = 1 E. |X|^2 > 1 Source: Others | Difficulty: Medium
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A
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Europass
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Practice Questions Chat 13 May 2023, 05:19
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gmatophobia
PS Question 1 - May 13 If X > X / |X| , Which of the following gives solution set of integer X? A. X > 1 B. X > -1 C. |X| < 1 D. |X| = 1 E. |X|^2 > 1 Source: Others | Difficulty: Medium
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B , solve by mod X = +x , -x for x>0 & x<0 respectively
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mysterymanrog
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Practice Questions Chat 13 May 2023, 11:02
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gmatophobia
DS Question 1 - May 13 Joan spent $10 to buy at least one piece each of apples and oranges at a store where each apple cost $2 and each orange cost $1. How many apples did she buy? (1) She spent more than $6 on buying oranges (2) She spent less than $10 on buying oranges Source: eGMAT | Difficulty: Medium
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1) more than 6 dollars on oranges. We know that it cannot be 10 dollars on oranges, as she purchased at least one apple. Therefore the only possible combination is 8 dollars of oranges, and 2 dollars of apples.
2) Clearly NS. Consider the case of 2 dollars on oranges. and 8 on apples or the reverse.

A.
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Practice Questions Chat 13 May 2023, 16:24
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Europass
B , solve by mod X = +x , -x for x>0 & x<0 respectively
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apply numbers. This is straightforward
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Practice Questions Chat 14 May 2023, 01:12
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Hello friends,
can anybody please share the link for questions to practise on topics standard deviation and averages
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0Lucky0
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Practice Questions Chat Updated on: 14 May 2023, 08:45
Originally posted by 0Lucky0 on 14 May 2023, 08:37.
Last edited by 0Lucky0 on 14 May 2023, 08:45, edited 4 times in total.
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115^2 = 11*12 25 = 13225

0Lucky0
115^2 = 11*12 25 = 13225
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If possible, can someone please explain this shortcut to me and how to use this? Thanks :)

mysterymanrog, Do you know? :)

mysterymanrog

oops, sorry, I figured it out. No need to explain anymore. :P Thank you everyone. :) Cheers :)
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Practice Questions Chat 15 May 2023, 00:14
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hi i ’m just new to the gmat quant. I’m doing some of the 700-questions and found them quite hard to solve under 1m30s. How long should it take to answer these questions?
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gmatophobia
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Practice Questions Chat Updated on: 15 May 2023, 00:46
Originally posted by gmatophobia on 15 May 2023, 00:45.
Last edited by gmatophobia on 15 May 2023, 00:46, edited 1 time in total.
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gmatophobia
DS Question 1 - May 13 Joan spent $10 to buy at least one piece each of apples and oranges at a store where each apple cost $2 and each orange cost $1. How many apples did she buy? (1) She spent more than $6 on buying oranges (2) She spent less than $10 on buying oranges Source: eGMAT | Difficulty: Medium
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Show SpoilerOA
A

gmatophobia
PS Question 1 - May 13 If X > X / |X| , Which of the following gives solution set of integer X? A. X > 1 B. X > -1 C. |X| < 1 D. |X| = 1 E. |X|^2 > 1 Source: Others | Difficulty: Medium
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A

PS Question 1 - May 15

When the digits of two-digit positive integer M are reversed, the result is two-digit positive integer N. Which of the following cannot be a factor of M^2+N^2?

A. 17
B. 29
C. 40
D. 73
E. 101

Source: Veritas Prep | Difficulty: Hard

DS Question 1 - May 15

If 1 < x < 2, is x a terminating decimal?

(1) 22x is an integer.

(2) 56x is an integer.

Source: Expert’s Global | Difficulty : Hard
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Practice Questions Chat Updated on: 15 May 2023, 10:40
Originally posted by crucifier on 15 May 2023, 10:35.
Last edited by crucifier on 15 May 2023, 10:40, edited 1 time in total.
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gmatophobia
DS Question 1 - May 15 If 1 < x < 2, is x a terminating decimal? (1) 22x is an integer. (2) 56x is an integer. Source: Expert’s Global | Difficulty : Hard
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c

gmatophobia
PS Question 1 - May 15 When the digits of two-digit positive integer M are reversed, the result is two-digit positive integer N. Which of the following cannot be a factor of M^2+N^2? A. 17 B. 29 C. 40 D. 73 E. 101 Source: Veritas Prep | Difficulty: Hard
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C, kinda guessing on this one
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Practice Questions Chat Updated on: 16 May 2023, 01:22
Originally posted by gmatophobia on 16 May 2023, 01:18.
Last edited by gmatophobia on 16 May 2023, 01:22, edited 3 times in total.
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gmatophobia
PS Question 1 - May 15 When the digits of two-digit positive integer M are reversed, the result is two-digit positive integer N. Which of the following cannot be a factor of M^2+N^2? A. 17 B. 29 C. 40 D. 73 E. 101 Source: Veritas Prep | Difficulty: Hard
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Show SpoilerOA
E

gmatophobia
DS Question 1 - May 15 If 1 < x < 2, is x a terminating decimal? (1) 22x is an integer. (2) 56x is an integer. Source: Expert’s Global | Difficulty : Hard
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C

DS Question 1 - May 16

If a and b are positive integers such that a = 24b + 56, what is the highest common factor for a and b?

(1) a = 8p, where p is a positive integer.

(2) b= 7q, where q is a positive integer.

Source: Expert’s Global | Difficulty: Hard

PS Question 1 - May 16

A contractor estimated that his 10-man crew could complete the construction in 110 days if there was no rain. (Assume the crew does not work on any rainy day and rain is the only factor that can deter the crew from working). However, on the 61-st day, after 5 days of rain, he hired 6 more people and finished the project early. If the job was done in 100 days, how many days after day 60 had rain?

A. 4
B. 5
C. 6
D. 7
E. 8

Source: GMAT Club Tests | Difficulty: Hard
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Practice Questions Chat Updated on: 16 May 2023, 05:36
Originally posted by eliotttttttttt on 16 May 2023, 05:29.
Last edited by eliotttttttttt on 16 May 2023, 05:36, edited 2 times in total.
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PS: B

gmatophobia
DS Question 1 - May 15 If 1 < x < 2, is x a terminating decimal? (1) 22x is an integer. (2) 56x is an integer. Source: Expert’s Global | Difficulty : Hard
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c

gmatophobia
PS Question 1 - May 15 When the digits of two-digit positive integer M are reversed, the result is two-digit positive integer N. Which of the following cannot be a factor of M^2+N^2? A. 17 B. 29 C. 40 D. 73 E. 101 Source: Veritas Prep | Difficulty: Hard
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First went for c but then chose E but still not 100% sure
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