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Quant Question of the Day Chat

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Edoua
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Re: Quant Question of the Day Chat [#permalink] New post   16 Apr 2024, 20:50
T4Star wrote:
Z can be a fraction too...

True
Sorry I missed

T4Star wrote:
Z can be a fraction too...

But for the product to be even, Z must be even
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1Shashi
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Re: Quant Question of the Day Chat [#permalink] New post   16 Apr 2024, 21:17
Edoua wrote:
But for the product to be even, Z must be even

True. Only way to reach the conclusion is by keeping Z as an even integer.
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Bunuel
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Re: Quant Question of the Day Chat [#permalink] New post   17 Apr 2024, 00:04
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T4Star wrote:
Quick DS question:
Is z even?
1) 3z = even
2) 5z = even

­The answer is C, not D because we are don't know whether z is an integer when evaluating the options individually. This question is discussed here: 

https://gmatclub.com/forum/is-z-even-1- ... 13535.html

Hope this helps.
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Bunuel
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Re: Quant Question of the Day Chat [#permalink] New post   17 Apr 2024, 01:33
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Data Sufficiency Butler: April 2024
April 17DS 1DS 2
­
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Bunuel
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Re: Quant Question of the Day Chat [#permalink] New post   17 Apr 2024, 01:36
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Problem Solving Butler: April 2023
April 17PS 1PS 2
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oneinabillion
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Re: Quant Question of the Day Chat [#permalink] New post   17 Apr 2024, 08:57
Hi, I wanted to ask, is doing the OG, Quant Review and giving all of the Gmat Club Quant practice tests enough practice for the quant section??
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divyansh843
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Re: Quant Question of the Day Chat [#permalink] New post   17 Apr 2024, 11:12
Can someone help pls with this ques
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SATYAM7777
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Re: Quant Question of the Day Chat [#permalink] New post   17 Apr 2024, 11:15
I guess you forgot to subtract both AB and RH- .

4 + 17 - 1
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HarshR9
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Re: Quant Question of the Day Chat [#permalink] New post   17 Apr 2024, 11:17
4+ 17-1 (because that one person who is AB and has RH -ve is double counted)!
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divyansh843
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Re: Quant Question of the Day Chat [#permalink] New post   17 Apr 2024, 11:28
don’t even know where to start solving this ques
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gmatnil
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Re: Quant Question of the Day Chat [#permalink] New post   17 Apr 2024, 11:32
Range of a function mean what all values can f(x) be. As it is X squared, and we are given "for all real numbers", lets say X is 0. Then f(0) = 1. Now on either side of zero no matter the value of x, squaring makes it positive. So 1/value greater than 1. That means, f(x) can be less than or equal to 1.
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HarshR9
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Re: Quant Question of the Day Chat [#permalink] New post   17 Apr 2024, 11:35
The first step to solving is to understand what is given and what is asked.

We are given a certain function (1/(x2+1)). We are being asked - what all values can (1/(x2+1)) take?

Whatever the value of x, x2 has to be >=0.

- If x =0, then x2 is 0
- If x is negative or positive, then x2 is positive.

So, (1/(x2+1)) is either 1 (when x =0, (1/(x2+1)) = 1/1 = 1) or a positive fraction (greater than o, lesser than 1). Example - x = -3, (1/(x2+1)) = 1 /10 = 0.1

In essence, whatever the value of x, (1/(x2+1)) has a "range" 0<x <=1 (positive, real numbers <=1). So, choice E.
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Bunuel
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Re: Quant Question of the Day Chat [#permalink] New post   17 Apr 2024, 11:44
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100 people question is discussed here: the-table-above-represents-100-people-grouped-by-their-blood-types-417244.html
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HarshR9
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Re: Quant Question of the Day Chat [#permalink] New post   17 Apr 2024, 11:45
Ah. Apologies for the typo. I meant 0 < (1/(x2+1)) <= 1. Guess it was still clear!
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Bunuel
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Re: Quant Question of the Day Chat [#permalink] New post   17 Apr 2024, 11:45
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The "range" question is discussed here: the-range-of-a-function-is-the-set-of-all-possible-values-of-the-func-417079.html
Hope this helps.
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Rahul_Sharma23
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Re: Quant Question of the Day Chat [#permalink] New post   17 Apr 2024, 12:31
Q: When integer k^4 is divided by 32 the remainder is zero. Which of the following could be remainder when integer k is divided by 32..... i) 2 ii) 4 iii) 6 .... How to properly approach this ques?
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Bunuel
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Re: Quant Question of the Day Chat [#permalink] New post   17 Apr 2024, 12:36
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Rahul_Sharma23 wrote:
Q: When integer k^4 is divided by 32 the remainder is zero. Which of the following could be remainder when integer k is divided by 32..... i) 2 ii) 4 iii) 6 .... How to properly approach this ques?

­This question is discussed in detail here:

https://gmatclub.com/forum/when-k-4-is- ... 45729.html

Hope this helps.
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curiousPope
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Re: Quant Question of the Day Chat [#permalink] New post   17 Apr 2024, 21:23
is anyone else facing this issue?
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Re: Quant Question of the Day Chat [#permalink] New post   17 Apr 2024, 21:28
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Are you trying to take a test or practice questions?
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curiousPope
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Re: Quant Question of the Day Chat [#permalink] New post   17 Apr 2024, 21:32
trying to access FE starter kit to take test
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Re: Quant Question of the Day Chat [#permalink]
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