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Re: Quant Question of the Day Chat [#permalink]
gmatophobia cant see answer ...when clicking on show spoiler it shows OA
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Re: Quant Question of the Day Chat [#permalink]
cat2010 wrote:
@GMATOPHOBIA cant see answer ...when clicking on show spoiler it shows OA

Ah ! I there is some issue. Thanks for reporting this.

The OA for all questions posted yesterday is E :lol:

PS Question - Dec 1

What is the range of the prime factors of m, if m = 2^5 * 3^11 - 9^6 - 3^11 ?

A. 0
B. 1
C. 2
D. 4
E. 5

Source: GMAT Club Tests | Difficulty: Medium

Originally posted by gmatophobia on 01 Dec 2022, 01:03.
Last edited by gmatophobia on 01 Dec 2022, 01:05, edited 2 times in total.
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Re: Quant Question of the Day Chat [#permalink]
gmatophobia wrote:
PS Question - Dec 1

What is the range of the prime factors of m, if m = 2^5 * 3^11 - 9^6 - 3^11 ?

A. 0
B. 1
C. 2
D. 4
E. 5

Source: GMAT Club Tests | Difficulty: Medium

simplification of m gives (3^11 * 7 * 2^2 ), so range of prime factors is 5
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Re: Quant Question of the Day Chat [#permalink]
DS Question 1 - Dec 1

Company Z only sells chairs and tables. what percent of its revenue in 2008 did company derive from its sales of tables?

(1) In 2008, the average price of tables sold by company Z was 10% higher than the average price of chairs sold by Company Z?
(2) In 2008, Company Z sold 20% fewer tables than chairs.

Source: Manhattan | Difficulty: Medium
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Re: Quant Question of the Day Chat [#permalink]
gmatophobia wrote:
DS Question 1 - Dec 1

Company Z only sells chairs and tables. what percent of its revenue in 2008 did company derive from its sales of tables?

(1) In 2008, the average price of tables sold by company Z was 10% higher than the average price of chairs sold by Company Z?
(2) In 2008, Company Z sold 20% fewer tables than chairs.

Source: Manhattan | Difficulty: Medium

C

gmatophobia wrote:
PS Question - Dec 1

What is the range of the prime factors of m, if m = 2^5 * 3^11 - 9^6 - 3^11 ?

A. 0
B. 1
C. 2
D. 4
E. 5

Source: GMAT Club Tests | Difficulty: Medium

E

Originally posted by mysterymanrog on 01 Dec 2022, 07:49.
Last edited by mysterymanrog on 01 Dec 2022, 07:52, edited 1 time in total.
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Re: Quant Question of the Day Chat [#permalink]
DS Question 2 - Dec 1

A number of oranges are to be distributed evenly among a number of baskets. Each basket will contain at least one orange. If there are 20 oranges to be distributed, what is the number of oranges per basket?

(1) If the number of baskets were halved and all other conditions remained the same, there would be twice as many oranges in every remaining basket.

(2) If the number of baskets were doubled, it would no longer be possible to place at least one orange in every basket.

Source: Manhattan | Difficulty: Hard
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Re: Quant Question of the Day Chat [#permalink]
gmatophobia wrote:
DS Question 2 - Dec 1

A number of oranges are to be distributed evenly among a number of baskets. Each basket will contain at least one orange. If there are 20 oranges to be distributed, what is the number of oranges per basket?

(1) If the number of baskets were halved and all other conditions remained the same, there would be twice as many oranges in every remaining basket.

(2) If the number of baskets were doubled, it would no longer be possible to place at least one orange in every basket.

Source: Manhattan | Difficulty: Hard

E
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Re: Quant Question of the Day Chat [#permalink]
gmatophobia wrote:
DS Question 2 - Dec 1

A number of oranges are to be distributed evenly among a number of baskets. Each basket will contain at least one orange. If there are 20 oranges to be distributed, what is the number of oranges per basket?

(1) If the number of baskets were halved and all other conditions remained the same, there would be twice as many oranges in every remaining basket.

(2) If the number of baskets were doubled, it would no longer be possible to place at least one orange in every basket.

Source: Manhattan | Difficulty: Hard

The 20 oranges are divided evenly into baskets. This means there are either 1,2,4,5,10, or 20 baskets.

1) has many possible cases. For example if there was 10 baskets and we halved, or 4 baskets and we bavled. Insuff.
2)
The only possible case where there are more baskets per orange if the baskets are doubled is if the initial baskets are 20.

B.
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Re: Quant Question of the Day Chat [#permalink]
Expert Reply
Hi. We’ve had some issues with spoilers working in the chat. We have fixed it. You may need to refresh your browser or app… which I’m not really sure how to refresh the app😂 but even without refreshing, I can see I can make it work by tapping a few times on the spoiler

Sorry about the trouble 😇
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Re: Quant Question of the Day Chat [#permalink]
gmatophobia wrote:
PS Question - Dec 1

What is the range of the prime factors of m, if m = 2^5 * 3^11 - 9^6 - 3^11 ?

A. 0
B. 1
C. 2
D. 4
E. 5

Source: GMAT Club Tests | Difficulty: Medium



gmatophobia wrote:
DS Question 1 - Dec 1

Company Z only sells chairs and tables. what percent of its revenue in 2008 did company derive from its sales of tables?

(1) In 2008, the average price of tables sold by company Z was 10% higher than the average price of chairs sold by Company Z?
(2) In 2008, Company Z sold 20% fewer tables than chairs.

Source: Manhattan | Difficulty: Medium



gmatophobia wrote:
DS Question 2 - Dec 1

A number of oranges are to be distributed evenly among a number of baskets. Each basket will contain at least one orange. If there are 20 oranges to be distributed, what is the number of oranges per basket?

(1) If the number of baskets were halved and all other conditions remained the same, there would be twice as many oranges in every remaining basket.

(2) If the number of baskets were doubled, it would no longer be possible to place at least one orange in every basket.

Source: Manhattan | Difficulty: Hard



PS Question 1 - Dec2

There are 7 red and 5 blue marbles in a jar. In how many ways 8 marbles can be selected from the jar so that at least one red marble and at least one blue marble is left in the jar?

A. 460
B. 490
C. 493
D. 445
E. 455

Source: GMAT Club Tests | Difficulty: Hard

Originally posted by gmatophobia on 02 Dec 2022, 01:39.
Last edited by gmatophobia on 02 Dec 2022, 01:42, edited 2 times in total.
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Re: Quant Question of the Day Chat [#permalink]
gmatophobia wrote:
PS Question 1 - Dec2

There are 7 red and 5 blue marbles in a jar. In how many ways 8 marbles can be selected from the jar so that at least one red marble and at least one blue marble is left in the jar?

A. 460
B. 490
C. 493
D. 445
E. 455

Source: GMAT Club Tests | Difficulty: Hard

total ways of selection 12C8 = 495
we can subtract those cases where we are selecting red or blue in its entirety i.e. not leaving out even one of them behind
case1 - select all 7red and remaining 3 blue -> 7C7 * 5C1 = 5
case2 - select all 5 blue and remaining 3 red -> 5C5 * 7C3 = 35

so, favorable cases left = 12C8 - (35+5) = 455

so option E ... ?

**case1 - select all 7red and remaining 1 blue -> 7C7 * 5C1 = 5
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Re: Quant Question of the Day Chat [#permalink]
DS Question 1 - Dec 2

If m and n are positive integers, is n^m − n divisible by 6?

(1) m = 3
(2) n = 2

Source: Other (DS Butler) | Difficulty: Medium
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Re: Quant Question of the Day Chat [#permalink]
gmatophobia wrote:
DS Question 1 - Dec 2

If m and n are positive integers, is n^m − n divisible by 6?

(1) m = 3
(2) n = 2

Source: Other (DS Butler) | Difficulty: Medium

A?
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Re: Quant Question of the Day Chat [#permalink]
gmatophobia wrote:
DS Question 1 - Dec 2

If m and n are positive integers, is n^m − n divisible by 6?

(1) m = 3
(2) n = 2

Source: Other (DS Butler) | Difficulty: Medium

1 is suff. n^3-n, n(n^2-1), n(n-1)(n+1) 3 consecutive integers are divisble by 3!, which is =6.
2 is insuff. Can be any number

A.
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Re: Quant Question of the Day Chat [#permalink]
gmatophobia wrote:
PS Question 1 - Dec2

There are 7 red and 5 blue marbles in a jar. In how many ways 8 marbles can be selected from the jar so that at least one red marble and at least one blue marble is left in the jar?

A. 460
B. 490
C. 493
D. 445
E. 455

Source: GMAT Club Tests | Difficulty: Hard

Ways to choose in total: 12c8=495
Ways to choose 5 blue and 3 red:
5c5=1
7c3=35
35
Ways to choose 7 red 1 blue
7c7
5c1=5
40 bad ways
495-40=455 total acceptable way.
E.
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Re: Quant Question of the Day Chat [#permalink]
gmatophobia wrote:
PS Question 1 - Dec2

There are 7 red and 5 blue marbles in a jar. In how many ways 8 marbles can be selected from the jar so that at least one red marble and at least one blue marble is left in the jar?

A. 460
B. 490
C. 493
D. 445
E. 455

Source: GMAT Club Tests | Difficulty: Hard



gmatophobia wrote:
DS Question 1 - Dec 2

If m and n are positive integers, is n^m − n divisible by 6?

(1) m = 3
(2) n = 2

Source: Other (DS Butler) | Difficulty: Medium



DS Question 1 - Dec 03

What is the value of xy ?

(1) x + y = 7
(2) (x + 1)(y – 1) = 6

Source: GMATPrepNow | Difficulty: Medium

Originally posted by gmatophobia on 03 Dec 2022, 01:13.
Last edited by gmatophobia on 03 Dec 2022, 01:16, edited 2 times in total.
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Re: Quant Question of the Day Chat [#permalink]
gmatophobia wrote:
DS Question 1 - Dec 03

What is the value of xy ?

(1) x + y = 7
(2) (x + 1)(y – 1) = 6

Source: GMATPrepNow | Difficulty: Medium

Neat question.
Both 1 and 2 are clearly insuff, there are infinite options for x and y
Going straight to 3
x+y=7, (x+1)(y-1)=6
x+y-1=6
(x+1)(y-1)=x+y-1
xy-2x=0
x(y-2)=0
If y is 2, x can be any (xy has infinite options)
if x is 0, y can be any (xy=0)
Insuff therefore E.
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