## Search found 151 matches

- by PussInBoots

Sat Feb 13, 2010 12:29 pm- Forum: Problem Solving
- Topic: the consequential graph
- Replies:
**3** - Views:
**1044**

Sorry for bringing this thread from archive, but what's wrong with option B?

edit: begun vs began, got it. F!@#king irregular verb sneaked in

- by PussInBoots

Tue Oct 20, 2009 2:16 pm- Forum: Sentence Correction
- Topic: OG12 / 111
- Replies:
**8** - Views:
**4366**

(3^27)(5^10)(z) = (5^8)(9^14)(x^y)

25z = 3 x^y

z = 3 * x^y / 25 -> x is multiple of 5

(2) alone says that x = 5, hence z = 3 * 5^y / 25, still not enough info cuz y = 2 and y = 4 work too. (1) narrows our choices to y = 2.

Answer is C

- by PussInBoots

Wed Sep 16, 2009 2:05 pm- Forum: Data Sufficiency
- Topic: MGmat number properties
- Replies:
**7** - Views:
**1332**

- by PussInBoots

Wed Sep 16, 2009 12:15 pm- Forum: Data Sufficiency
- Topic: Multiple of 8
- Replies:
**2** - Views:
**1197**

2*4*6*8*..*100 = 1*2 * 2*2 * 3*2 * 4*2 *... * 50*2 = 50! * 2^50 50! is divisible by any positive integer less or equal to 50, just like 4! is divisible by 1, 2, 3, 4. Hence 50! * 2^50 is divisible by any positive integer less or equal to 50. If you add 1, then the new number is not divisible by any ...

- by PussInBoots

Wed Sep 16, 2009 12:09 pm- Forum: Problem Solving
- Topic: Function/Prime Number Problem
- Replies:
**4** - Views:
**1127**

- by PussInBoots

Mon Sep 14, 2009 11:30 pm- Forum: Data Sufficiency
- Topic: probability
- Replies:
**3** - Views:
**832**

- by PussInBoots

Mon Sep 14, 2009 11:25 pm- Forum: Data Sufficiency
- Topic: 90 copies of book
- Replies:
**4** - Views:
**928**

- by PussInBoots

Mon Sep 14, 2009 11:21 pm- Forum: Data Sufficiency
- Topic: Sqaure of an integer
- Replies:
**7** - Views:
**1192**

1. 8 vs 16 2. k = p1 * p2 * p3 * ... * pK p1, p2, .., pK are prime numbers in prime factorization "exactly different prime numbers" -> p1 through pK are different (to my understanding) hence k cannot be square of integer. Square of integers must have even numver of each prime number in its prime fac...

- by PussInBoots

Mon Sep 14, 2009 11:21 pm- Forum: Data Sufficiency
- Topic: Sqaure of an integer
- Replies:
**7** - Views:
**1192**

10^50 has fifty zeros.

Subtract 1 and we get fifty nines.

Subtract 74 and we get 48 nines, 2 and 6.

48 * 9 + 2 + 6 = 360 + 72 + 8 = 440

Answer is C

http://www.beatthegmat.com/base-10-nota ... 20304.html

- by PussInBoots

Mon Sep 14, 2009 11:11 pm- Forum: Problem Solving
- Topic: Integer notation
- Replies:
**5** - Views:
**947**

I disagree

Total combinations: 4*4*4*4

Total combinations of different numbers: 4*3*2*1

Answer is 4! / 4^4 = 1/8, hence ~12%

- by PussInBoots

Sun Sep 13, 2009 10:26 pm- Forum: Problem Solving
- Topic: As part of a game, four people each must secretly choose an
- Replies:
**16** - Views:
**3110**

- by PussInBoots

Sat Sep 12, 2009 6:02 pm- Forum: Problem Solving
- Topic: Number properties
- Replies:
**6** - Views:
**902**

- by PussInBoots

Sat Sep 12, 2009 12:26 pm- Forum: Sentence Correction
- Topic: Not only!
- Replies:
**4** - Views:
**1151**

- by PussInBoots

Sat Sep 12, 2009 12:10 pm- Forum: Sentence Correction
- Topic: pl solve ths..exam next week
- Replies:
**1** - Views:
**712**

- by PussInBoots

Sat Sep 12, 2009 12:01 pm- Forum: Sentence Correction
- Topic: swimming
- Replies:
**9** - Views:
**6532**