GMAT Test practice questions, page 64 of 65, with answer review and explanations.
Question 316
A and B are integers. The expression (A + 1)(B + 1) is even. What can be said about A and B?
They are both even numbers.
At least one of them is even.
At least one of them is odd.
They are both odd.
Nothing can be said surly on A and B.
Question 317
In orange county one fifth of the people are gathering mushrooms and one seventh of the people are collecting apples. What can be the number of people in Orange County?
60
42
85
140
252
Question 318
Danny can divide his herd into 5 equal parts and also to 6 equal parts, but not to 9 equal parts. What could be the number of cows Danny has in his herd?
155
336
180
120
456
Question 319
The number of bunnies in Peter's yard increases by 4 times every week. How many weeks will it take for the number of bunnies to be divisible by 8 assuming that he started out with 3 bunnies?
1
2
3
4
Never.
Question 320
If X = 23 ֳ— 52 ֳ— 7, then the expression X/8 is not divisible by: