Discussion
If the integer x is divisible by 3 but not by 2, then which one of the following expressions is NEVER an integer?
| (A) | (x + 1)/2 |
| (B) | ... |
| (C) | ... |
| (D) | ... |
| (E) | ... |
| (F) | ... |
The solution is
Posted: 01/01/2013 07:27
I took x =9 . When I did 3/7 the answer wasn't an integer . So how come the choice B is incorrect ??
Posted: 01/01/2013 11:34
E.g. when x=21 the quotient is 3 an integer while all rules apply, x divisible by 3 but not by 2.
Niels
PS. When x=9 you'll get 9/7 ;)
Niels
PS. When x=9 you'll get 9/7 ;)