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# Quant Question of the Day Chat

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Re: Quant Question of the Day Chat [#permalink]
gmatophobia wrote:
DS Question 1 - Jan 25 Ed has some fish, and the combined weight of all the fish is 100 pounds. The weights of the fish are all different. Ed gives the 3 heaviest fish to Ann, the 2 lightest fish to Bob, and the remaining fish to Carol. If the combined weight of the 3 heaviest fish is 50 pounds, how many fish does Carol receive? (1) The combined weight of the fish Carol receives is 30 pounds. (2) The combined weight of the fish Bob receives is 20 pounds. Source: GMATPrepNow | Difficulty: Hard

Both statements point to the exact inference, i.e. weight of fish, Bob received.
Then the answer is between option D or E.
But since this would not be marked a "hard" question just for both statements to be insufficient together. So, taking a guess and going with option D here?!

Note - Never guess answers like this! waiting for a solution soon ...
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Re: Quant Question of the Day Chat [#permalink]
Join Live GMAT Class by Manhattan Verbal Coach redirect.php?id=z1okhxugbj
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Re: Quant Question of the Day Chat [#permalink]
AbhinavKumar wrote:
Both statements point to the exact inference, i.e. weight of fish, Bob received. Then the answer is between option D or E. But since this would not be marked a "hard" question just for both statements to be insufficient together. So, taking a guess and going with option D here?! Note - Never guess answers like this! waiting for a solution soon ...

"Note - Never guess answers like this!"

This cracked me up

Will share my thoughts in a while.

D

gmatophobia wrote:
DS Question 1 - Jan 25 Ed has some fish, and the combined weight of all the fish is 100 pounds. The weights of the fish are all different. Ed gives the 3 heaviest fish to Ann, the 2 lightest fish to Bob, and the remaining fish to Carol. If the combined weight of the 3 heaviest fish is 50 pounds, how many fish does Carol receive? (1) The combined weight of the fish Carol receives is 30 pounds. (2) The combined weight of the fish Bob receives is 20 pounds. Source: GMATPrepNow | Difficulty: Hard

D

PS Question 1 - Jan 26

What is the remainder when (222∗321∗542∗563∗722∗926∗98347) is divided by 20?

A. 18
B. 16
C. 12
D. 8
E. 4

Source: Expert’s Global | Difficulty: Medium

Originally posted by gmatophobia on 26 Jan 2023, 00:57.
Last edited by gmatophobia on 26 Jan 2023, 00:59, edited 2 times in total.
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Re: Quant Question of the Day Chat [#permalink]
gmatophobia wrote:
PS Question 1 - Jan 26 What is the remainder when (222∗321∗542∗563∗722∗926∗98347) is divided by 20? A. 18 B. 16 C. 12 D. 8 E. 4 Source: Expert’s Global | Difficulty: Medium

Remainder of a product of n numbers when divided by x will be remainder of the product of the remainders of those n numbers.

i.e,
remainder(n1*n2*n3) = remainder(remainder(n1)*remainder(n2)*remainder(n3))

This gives option D as answer
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Re: Quant Question of the Day Chat [#permalink]
A?

The question asks "How much extra time per day should the new team work". So, the answer is D

Originally posted by gmatophobia on 26 Jan 2023, 06:01.
Last edited by gmatophobia on 26 Jan 2023, 06:02, edited 2 times in total.
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Re: Quant Question of the Day Chat [#permalink]
gmatophobia wrote:
The question asks "How much extra time per day should the new team work". So, the answer is D

Yes, the answer should be option D. 10 hours 40 minutes minus 8 hours = 2 hours 40 minutes
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Re: Quant Question of the Day Chat [#permalink]
gmatophobia wrote:
PS Question 1 - Jan 26 What is the remainder when (222∗321∗542∗563∗722∗926∗98347) is divided by 20? A. 18 B. 16 C. 12 D. 8 E. 4 Source: Expert’s Global | Difficulty: Medium

D

DS Question 1 - Jan 28

The sum of n consecutive positive integers is 45. What is the value of n?

(1) n is even
(2) n < 9

Source: Manhattan | Difficulty: Hard

Originally posted by gmatophobia on 28 Jan 2023, 01:03.
Last edited by gmatophobia on 28 Jan 2023, 01:19, edited 2 times in total.
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Re: Quant Question of the Day Chat [#permalink]
PS Question 1 - Jan 28

Two months from now, the population of a colony of insects in a remote area will reach 3.2 * 10^4. If the population of the colony doubles every two months, what was the population eight months ago?

a) 3.6 * 10^2
b) 1.0 * 10^3
c) 2.0 * 10^3
d) 1.6 * 10^4
e) 2.6 * 10^4

Source: Veritas Prep | Difficulty: Medium
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Re: Quant Question of the Day Chat [#permalink]
gmatophobia wrote:
PS Question 1 - Jan 28 Two months from now, the population of a colony of insects in a remote area will reach 3.2 * 10^4. If the population of the colony doubles every two months, what was the population eight months ago? a) 3.6 * 10^2 b) 1.0 * 10^3 c) 2.0 * 10^3 d) 1.6 * 10^4 e) 2.6 * 10^4 Source: Veritas Prep | Difficulty: Medium

Option B

gmatophobia wrote:
DS Question 1 - Jan 28 The sum of n consecutive positive integers is 45. What is the value of n? (1) n is even (2) n < 9 Source: Manhattan | Difficulty: Hard

can somebody please share the solution for this one?

Originally posted by AbhinavKumar on 29 Jan 2023, 00:10.
Last edited by AbhinavKumar on 29 Jan 2023, 00:11, edited 1 time in total.
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Re: Quant Question of the Day Chat [#permalink]
AbhinavKumar wrote:
can somebody please share the solution for this one?

Check if this helps

gmatophobia wrote:
DS Question 1 - Jan 28 The sum of n consecutive positive integers is 45. What is the value of n? (1) n is even (2) n < 9 Source: Manhattan | Difficulty: Hard

E

gmatophobia wrote:
PS Question 1 - Jan 28 Two months from now, the population of a colony of insects in a remote area will reach 3.2 * 10^4. If the population of the colony doubles every two months, what was the population eight months ago? a) 3.6 * 10^2 b) 1.0 * 10^3 c) 2.0 * 10^3 d) 1.6 * 10^4 e) 2.6 * 10^4 Source: Veritas Prep | Difficulty: Medium

B

Originally posted by gmatophobia on 29 Jan 2023, 03:15.
Last edited by gmatophobia on 29 Jan 2023, 03:16, edited 1 time in total.
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Re: Quant Question of the Day Chat [#permalink]
gmatophobia wrote:
Check if this helps

Best way to solve for sure :p
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Re: Quant Question of the Day Chat [#permalink]
mysterymanrog wrote:
Best way to solve for sure :p

:)

PS Question 1 - Jan 29

x = 10^10 - z, where z is a two-digit integer. If the sum of the digits of x equals 84, how many values for z are possible?

A. 3
B. 4
C. 5
D. 6
E. 7

Source: Manhattan Prep | Difficulty: Hard

DS Question 1 - Jan 29

Is x > 0?

(1) |x + 3| = 4x – 3
(2) |x – 3| = |2x – 3|

Source: Others | Difficulty: Hard
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Re: Quant Question of the Day Chat [#permalink]
gmatophobia wrote:
DS Question 1 - Jan 29 Is x > 0? (1) |x + 3| = 4x – 3 (2) |x – 3| = |2x – 3| Source: Others | Difficulty: Hard

Did this briefly in my head, so I am not sure if it’s correct:

1) Should be sufficient. You case where x=2, which works and case where x=0, however in this case LHS would negative which is not possible.

2) not sufficient. Case where x=0 (which is valid since now both sides are equal to 3), and case where x=2
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Re: Quant Question of the Day Chat [#permalink]
That was lightening fast
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Re: Quant Question of the Day Chat [#permalink]
one of the most common DS traps in gmat is using the propoerty of abs(x)>=0
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Re: Quant Question of the Day Chat [#permalink]
Do give the PS one a try. Its a good (tricky) question
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Re: Quant Question of the Day Chat [#permalink]
So I was looking for that right away
Re: Quant Question of the Day Chat [#permalink]
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