Search found 20 matches
I tried doing this using the double matrix method and got stuck until I figured out that there is a hidden constraint here. The Number of Non-Gala trees and Non-Fuji trees is 0. This makes the 33 easily. I did not have that as a zero first in my matrix for this problem and wondered what to do with i...
- by minkathebest
Sat Nov 03, 2012 2:23 pm- Forum: Problem Solving
- Topic: Cross Pollination
- Replies: 5
- Views: 2992
Hello all, In the plug-in approach, one minor clarification, why don't we consider 20, 28, etc as the divisor possibilities? I.e., 4(5) = 20, 4(7) = 28. Thank you all in advance. I may have answered my own question, there are four possibilities in each combination: 4(7) = 28, Even divisors = 2, 4, 1...
- by minkathebest
Mon Oct 01, 2012 8:02 pm- Forum: Problem Solving
- Topic: Divisibility/Primes: If n=4p, where p is prime number greate
- Replies: 11
- Views: 11326
Is it D?
Statement 1: (X) (x-4) +3 y > 0 . So if y>0 and x>4 then the eq is always >0
Statement 2: 3x-4 = -1 => x^2 > -1. X^2 will always be positive number so this is true as well.
- by minkathebest
Sat Sep 22, 2012 10:19 pm- Forum: Data Sufficiency
- Topic: data suff help needed
- Replies: 3
- Views: 1144
Thank you! If m, n, and p are integers, is m + n odd? (1) m = p^2 + 4p + 4 (2) n = p^2 + 2m + 1 (1) m = p² + 4p + 4 = (p + 2)² Now m can be either even or odd, depending on p's value and nothing is given about n; NOT sufficient. (2) n = p² + 2m + 1 Now 2m will always be even, whether m is even or...
- by minkathebest
Sat Sep 22, 2012 1:45 pm- Forum: Data Sufficiency
- Topic: M N P
- Replies: 3
- Views: 1382
Hello Gmatgury, Why do you know that the following is true? The minimum possible value for b and c is 30, implying 3 pieces with a length of 30. The minimum possible value for e and f is 84, implying 3 pieces with a length of 84. Best regards, baBa 183. Seven pieces of rope have an average (arithmet...
- by minkathebest
Sat Jul 28, 2012 2:48 pm- Forum: Problem Solving
- Topic: OG 13 #183 Seven pieces of rope...
- Replies: 20
- Views: 9374