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Quant Question of the Day Chat

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mysterymanrog
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Re: Quant Question of the Day Chat [#permalink] New post   03 Jun 2023, 00:10
Anki111 wrote:
can we take zero to the power zero as 1?

No, the gmat does not use zero to the power of zero
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mysterymanrog
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Re: Quant Question of the Day Chat [#permalink] New post   03 Jun 2023, 00:11
B looks surficient for this

x^x=1

x can only be 1, as if it is -1 it does not change signs
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Anki111
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Re: Quant Question of the Day Chat [#permalink] New post   03 Jun 2023, 00:12
Yea i got B as well, just clarifying the doubt
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mysterymanrog
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Re: Quant Question of the Day Chat [#permalink] New post   03 Jun 2023, 00:13
and btw, 0^0 is undefined
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Anki111
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Re: Quant Question of the Day Chat [#permalink] New post   03 Jun 2023, 00:13
No, it is undefined and can be 1 depends on what you are asking
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mysterymanrog
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Re: Quant Question of the Day Chat [#permalink] New post   03 Jun 2023, 00:13
because if you consider: 0^(1-1) which implies that 0^0=0/0

so that is why gmat does not use it
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Re: Quant Question of the Day Chat [#permalink] New post   03 Jun 2023, 00:35
yes then the answer stands B
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Anki111
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Re: Quant Question of the Day Chat [#permalink] New post   03 Jun 2023, 00:36
To practice quant questions, which test prep has the closest gmat like questions, anyone ?
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Anki111
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Re: Quant Question of the Day Chat [#permalink] New post   03 Jun 2023, 01:12
Is x/y > 0? (1) x - y > 0 (2) xy > 0
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Re: Quant Question of the Day Chat [#permalink] New post   Updated on: 03 Jun 2023, 01:42
wickedvikram wrote:
P(only 1C) = 3{P(1+ C)-[2*P(only 2C)+P(only 3C)]} P(only 3C) = 6!*2!*2!*2!/9! P(only 2C) = P(2+ C)-P(only 3C)= (7!*2!*2!-6!*2!*2!*2!)/9! (for only 1 pair of 2couple, *3 for all ) P(1+ C)=2*8!/9! (for only 1 couple, *3 for all ) Substitute in first eqn to get 8/21

Can you explain this in words?

Anki111 wrote:
What is the value of x? (1) x^(-2x) = 1 (2) x^x = 1

D

Originally posted by sg_mba on 03 Jun 2023, 01:38.
Last edited by sg_mba on 03 Jun 2023, 01:42, edited 1 time in total.
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Re: Quant Question of the Day Chat [#permalink] New post   03 Jun 2023, 02:37
Anki111 wrote:
What is the value of x? (1) x−2x=1 � − 2 � = 1 (2) xx=1

The answer is A. Because by (1) x-2x=1 or -x = 1 or x= -1. (1) Sufficient

But with (2) XxX = 1 now X can be -1 or √1 or 1 ... So (2) not sufficient

Answer (A)
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Re: Quant Question of the Day Chat [#permalink] New post   03 Jun 2023, 02:40
Aniket229 wrote:
The answer is A. Because by (1) x-2x=1 or -x = 1 or x= -1. (1) Sufficient But with (2) XxX = 1 now X can be -1 or √1 or 1 ... So (2) not sufficient Answer (A)

root(1) is just 1... -1 to the power of -1 is not 1, its -1. So its only 1.
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Re: Quant Question of the Day Chat [#permalink] New post   03 Jun 2023, 02:44
Ultimately the answer is A right??
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mysterymanrog
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Re: Quant Question of the Day Chat [#permalink] New post   03 Jun 2023, 03:09
Aniket229 wrote:
Ultimately the answer is A right??

No. Statment one states:
x^(-2x)=1. X can be either 1 or -1 in this case, so it is not sufficient for us to determine a value of X
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AG2907
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Re: Quant Question of the Day Chat [#permalink] New post   03 Jun 2023, 03:46
Any tips on how to increase speed for quant?

I am just able to answer about 22-24 questions with good accuracy
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DrHuber
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Re: Quant Question of the Day Chat [#permalink] New post   04 Jun 2023, 17:31
AG2907, I told you you need practice and a teacher. You are too weak!!
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gmatophobia
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Re: Quant Question of the Day Chat [#permalink] New post   05 Jun 2023, 00:09
AG2907 wrote:
Any tips on how to increase speed for quant?

AG2907, I believe you’re spending a bit more time per question (and overall) in the first few questions. The key is to make intelligent guesses and move past questions that end up taking way too much time. It’s okay to get some bruises to win the battle :)

Also having a good mastery over basics will help you solve questions quickly. Would recommend that you review the questions that you ended up taking more than 2 mins (even if you get them correct) to find if there is a better way of solving such questions.

Here are a few tips that you may consider going through -

https://blog.targettestprep.com/how-to- ... ant-score/
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Bukola24
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Re: Quant Question of the Day Chat [#permalink] New post   05 Jun 2023, 00:11
As the protest mounted, small skirmishes between students and police that broke out everywhere, flaring up like sudden brush fires on all sides.
A. Skirmishes between students and police that broke
B. Skirmishes between students and police which broke
C. Skirmishes between students and police broke
D. Skirmishes between students and police were breaking
E. Skirmishes between students and police breaking

hi, good morning

Can anyone help please ?
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gmatophobia
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Re: Quant Question of the Day Chat [#permalink] New post   Updated on: 05 Jun 2023, 00:36
DrHuber wrote:
AG2907, I told you you need practice and a teacher. You are too weak!!

DrHuber, With all due respect - Attempting 22 - 24 questions with good accuracy isn’t a sign of being "too weak". Yes, there is a timing issue that can be worked on. But labeling a person such on a public forum isn’t cool!

gmatophobia wrote:
DS Question 1 - June 6 For each landscaping job that takes more than 4 hours, a certain contractor charges a total of r dollars for the first 4 hours plus 0.2*r dollars for each additional hour or fraction of an hour, where r > 100, Did a particular landscaping job take more than 10 hours. (1) The contractor charges a total of $288 for the job. (2) The contractor charges a total of 2.4r dollars for the job. Source: Official Guide | Difficulty: Hard

Show SpoilerOA
B


gmatophobia wrote:
PS Question 1 - June 6 9 people, including 3 couples, are to be seated in a row of 9 chairs. What is the probability that only one couple is sitting together A. 1/63 B. 1/6 C. 8/21 D. 61/126 E. 7/9 Source: Others | Difficulty: Hard

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C


DS Question 1 - June 5

If ||x−1|+|x||=|x+3|−x, then what is the value of x ?

(1) |x| is not a prime number

(2) 2x^2 is a prime number

Source: GMAT Club Tests | Difficulty: Hard

PS Question 1 - June 5

A family consisting of one mother, one father, two daughters and a son is taking a road trip in a sedan. The sedan has two front seats and three back seats. If one of the parents must drive and the two daughters refuse to sit next to each other, how many possible seating arrangements are there?

A. 28
B. 32
C. 48
D. 60
E. 120

Source: Manhattan | Difficulty: Hard

Originally posted by gmatophobia on 05 Jun 2023, 00:14.
Last edited by gmatophobia on 05 Jun 2023, 00:36, edited 6 times in total.
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divyadna
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Re: Quant Question of the Day Chat [#permalink] New post   05 Jun 2023, 01:08
B?

Calculate all possible combinations and subtract from them the combinations which have two daughters seated together
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Re: Quant Question of the Day Chat [#permalink]
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