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Math Revolution Daily quizzes

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Math Revolution Daily quizzes  [#permalink]

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New post Updated on: 09 Jan 2017, 22:29
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Math Revolution Daily Quiz (Day 1)

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Originally posted by MathRevolution on 31 Oct 2016, 02:29.
Last edited by MathRevolution on 09 Jan 2017, 22:29, edited 1 time in total.
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Re: Math Revolution Daily quizzes  [#permalink]

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New post 31 Oct 2016, 20:15
MathRevolution wrote:
Math Revolution Daily Quiz (Day 1)

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Is s+t/2=5p/2------->is s+t=5p??

(1) s+t+p/3=2p (as s<p<t median=p)

or s+t+p=6p------s+t=5p-------->suff

(2) s+t=5p------.directly gives ans.------>suff

Ans D
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Math Revolution Daily quiz (Day 2)  [#permalink]

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New post Updated on: 09 Jan 2017, 22:31
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Math Revolution Daily quiz (Day 2)

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Originally posted by MathRevolution on 01 Nov 2016, 02:10.
Last edited by MathRevolution on 09 Jan 2017, 22:31, edited 1 time in total.
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Re: Math Revolution Daily quiz (Day 2)  [#permalink]

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New post 02 Nov 2016, 04:34
Let the two digit number be ab
10a+b = 4(a+b)
6a = 3b
2a = b
Possible values of (b,a) include :(2,1), (4,2), (6,3) & (8,4)

(1) tens digit is 1
a = 1 => b =2
number is 12

(2) units value is a prime number.
from the possible values, only b=2 satisfies.
so a=1
number is 12.

Either of the options is sufficient. Option D
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Math Revolution Daily quiz (Day 4)  [#permalink]

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New post 03 Nov 2016, 01:37
Math Revolution Daily quiz (Day 4)

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Math Revolution Daily quiz (Day 7)  [#permalink]

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New post 08 Nov 2016, 02:12
Math Revolution Daily quiz (Day 7)

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Math Revolution Daily quiz (Day 8)  [#permalink]

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New post Updated on: 09 Jan 2017, 22:36
1
Math Revolution Daily quiz (Day 8)

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Originally posted by MathRevolution on 09 Nov 2016, 01:32.
Last edited by MathRevolution on 09 Jan 2017, 22:36, edited 1 time in total.
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Math Revolution Daily quiz (Day 10)  [#permalink]

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New post 11 Nov 2016, 01:02
Math Revolution Daily quiz (Day 10)

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Math Revolution Daily quiz (Day 12)  [#permalink]

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New post Updated on: 09 Jan 2017, 22:52
Math Revolution Daily quiz (Day 12)

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MathRevolution: Finish GMAT Quant Section with 10 minutes to spare
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Originally posted by MathRevolution on 15 Nov 2016, 02:04.
Last edited by MathRevolution on 09 Jan 2017, 22:52, edited 1 time in total.
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Re: Math Revolution Daily quiz (Day 12)  [#permalink]

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New post 15 Nov 2016, 11:51
S1 - n=4p+odd integer, where p is any integer
i.e. remainder can be 1,3 which are odd.
any number with remainder 1,3 when divided by 4 , gives remainder 1 when divided by 2, which can be checked by substituting some values.
Hence sufficient.

S2 - n=3q+odd integer, where q is any integer
i.e. remainder can be 1 which is only odd remainder.
any number when divided by 3 and leaving remainder 1 can have remainder 0 or 1 when divided by 2, hence not sufficient.

Hence answer A.

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Math Revolution Daily quiz (Day 13)  [#permalink]

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New post 16 Nov 2016, 01:13
Math Revolution Daily quiz (Day 13)

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Math Revolution Daily quiz (Day 14)  [#permalink]

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New post 17 Nov 2016, 04:08
Math Revolution Daily quiz (Day 14)

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Math Revolution Daily quiz (Day 15)  [#permalink]

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New post Updated on: 09 Jan 2017, 22:54
Math Revolution Daily quiz (Day 15)

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Just ​spare 15 minutes to study each day, and you will be amazed by significant improvement in GMAT Math!

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Originally posted by MathRevolution on 18 Nov 2016, 01:18.
Last edited by MathRevolution on 09 Jan 2017, 22:54, edited 1 time in total.
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Re: Math Revolution Daily quiz (Day 15)  [#permalink]

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New post 18 Nov 2016, 13:17
FROM STATEMENT - I ( Insufficient)

\(3^{x + y} = 3^4\)

Or, \(x + y = 4\)

FROM STATEMENT - II ( Insufficient)

\(3^{x + 2y} = 3^3\)

Or,\(x + 2y = 3\)

FROM STATEMENT - I & II ( Sufficient)

\(x + y = 4\) or \(2x + 2y = 8\)
\(x + 2y = 3\)

Now, \(x + 2y = 3\)

Or, \(2y = 3 - x\)

Or, 8 - 2x = 3 - x

Or, x = 5 So y = -1

Thus BOTH statements (1) and (2) TOGETHER are sufficient to answer the question asked, but NEITHER statement ALONE is sufficient to answer the question asked, answer will be (C)
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Math Revolution Daily quiz (Day 16)  [#permalink]

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New post 21 Nov 2016, 01:53
Math Revolution Daily quiz (Day 16)

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Math Revolution Daily quiz (Day 17)  [#permalink]

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New post 22 Nov 2016, 01:35
Math Revolution Daily quiz (Day 17)

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Math Revolution Daily quiz (Day 20)  [#permalink]

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New post Updated on: 09 Jan 2017, 22:58
Math Revolution Daily quiz (Day 20)

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Originally posted by MathRevolution on 25 Nov 2016, 02:06.
Last edited by MathRevolution on 09 Jan 2017, 22:58, edited 1 time in total.
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Re: Math Revolution Daily quiz (Day 20)  [#permalink]

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New post 25 Nov 2016, 03:19
If the least and the average salary are same, then all the entries are same. Therefore, median =$95K

So, it's C

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Math Revolution Daily quiz (Day 23)  [#permalink]

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New post 30 Nov 2016, 01:16
Math Revolution Daily quiz (Day 23)

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Math Revolution Daily quiz (Day 24)  [#permalink]

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New post 01 Dec 2016, 01:13
Math Revolution Daily quiz (Day 24)

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Math Revolution Daily quiz (Day 24)   [#permalink] 01 Dec 2016, 01:13

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