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# [Math Revolution] Practice "Math Questions of the Day"

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Math Revolution GMAT Instructor
Joined: 16 Aug 2015
Posts: 7993
GMAT 1: 760 Q51 V42
GPA: 3.82
[Math Revolution] Practice "Math Questions of the Day"  [#permalink]

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10 Oct 2018, 01:25
To help you sharpen your math skills and hit your target score of Q49-51, we are sending you 4 math questions (2 DS, 2 PS) and solutions regularly.
These questions are the types of questions appearing in GMAT exam frequently.

Attachment:

Math Revolution Questions.png [ 385.96 KiB | Viewed 262 times ]

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MathRevolution: Finish GMAT Quant Section with 10 minutes to spare
The one-and-only World’s First Variable Approach for DS and IVY Approach for PS with ease, speed and accuracy.
"Only \$79 for 1 month Online Course"
"Free Resources-30 day online access & Diagnostic Test"
"Unlimited Access to over 120 free video lessons - try it yourself"
RC Moderator
Joined: 24 Aug 2016
Posts: 790
GMAT 1: 540 Q49 V16
GMAT 2: 680 Q49 V33
Re: [Math Revolution] Practice "Math Questions of the Day"  [#permalink]

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10 Oct 2018, 10:33
At the solution of Q2............ out of 89,90 & 91 ..... there is only 1 Prime ( not 2)
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Please let me know if I am going in wrong direction.
Thanks in appreciation.
Math Revolution GMAT Instructor
Joined: 16 Aug 2015
Posts: 7993
GMAT 1: 760 Q51 V42
GPA: 3.82
Re: [Math Revolution] Practice "Math Questions of the Day"  [#permalink]

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12 Oct 2018, 11:53
u1983 wrote:
At the solution of Q2............ out of 89,90 & 91 ..... there is only 1 Prime ( not 2)

Oh. You're right.
There was a mistake in the condition 2).
It should be fixed in the following way.

Condition 2) : The least number of the integers is a prime number.

_________________
MathRevolution: Finish GMAT Quant Section with 10 minutes to spare
The one-and-only World’s First Variable Approach for DS and IVY Approach for PS with ease, speed and accuracy.
"Only \$79 for 1 month Online Course"
"Free Resources-30 day online access & Diagnostic Test"
"Unlimited Access to over 120 free video lessons - try it yourself"
NUS School Moderator
Joined: 18 Jul 2018
Posts: 1028
Location: India
Concentration: Finance, Marketing
WE: Engineering (Energy and Utilities)
Re: [Math Revolution] Practice "Math Questions of the Day"  [#permalink]

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12 Oct 2018, 12:53
MathRevolution wrote:
u1983 wrote:
At the solution of Q2............ out of 89,90 & 91 ..... there is only 1 Prime ( not 2)

Oh. You're right.
There was a mistake in the condition 2).
It should be fixed in the following way.

Condition 2) : The least number of the integers is a prime number.

In Q2. S2. we can take 59,60,61. 59 and 61 are prime. So is 29 and 31 (If we take 29,30,31). Hence B is insufficent
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Re: [Math Revolution] Practice "Math Questions of the Day"   [#permalink] 12 Oct 2018, 12:53
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# [Math Revolution] Practice "Math Questions of the Day"

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