Need clarification with this question please

Three integer from 1 to 100 are randomly selected such that one integer can be selected multiple times. what is the probability that the sum of the three integers will be even. A) 7/32 B) 1/4 C) 9/32 D) 3/16 E) 1/2 this question come from a youtube complex proability question. when he solve it, He s...

Hi Rich, I went back and get the exact date that i took the CAT. It was back in January 26th. sorry it was not mid February. time flies. I m behind in my study then. can you provide any suggestion on how to improve. what material is best to purchase. there are so many of them out there. I think i mi...

Hi Rich,

The next current deadline is July 15th that will be for the fall semester which start in August.
The April 15th deadline is for the summer which start in May.

HI Rich, thank you for always response. OG is the only book i am using to practice. I bought a pearson prep. I have not used it. I started studying late last year and felt behind due to time constraint and gave up. I restarted to study mid February again. My first CAT was horrible. it was (Q21, V13)...

OG 13 #229

GMAT Official Guide

How many of the integers that satisfy the inequality (x+2)(x+3)/x-2 >=0 are less than 5?

A) 1
B 2
C 3
D 4
E 5

i see the book has D as the answer and i had B. I don't understand the book explanation

thanks

Hi Rich,

it seems like when I test n=1 x=4, it gives me a different solution. the result is 24/5. in your explanation, you said the answer will always 12/5. can you explain

og 13 #99 help

99. if r and s are the roots of the equation x^2 + bx+c =0, where b and c are constants, is rs<0

1) b<0
2) c<0

can someone please clarify this. i don't get the explanation the book provide. I still confused.

thanks