Discussion
If the integer x is divisible by 3 but not by 2, then which one of the following expressions is NEVER an integer?
*This question is included in Nova Press: Set B - Substitution, question #12
| (A) |  |
| (B) | ... |
| (C) | ... |
| (D) | ... |
| (E) | ... |
| (F) | ... |
The solution is
Posted: 05/02/2013 17:46
If x = 3 so choice B becomes 3 divided by 7 so it is not an integer so choice B is correct
Posted: 05/03/2013 02:06
Hi Haguar,
Remember, we are looking for the expression that is NEVER an integer.
It is true that x/7 is not an integer when x = 3, but it is for some values of x. For example, if x = 21, then x/7 = 21/7 = 3.
Hence, the answer is not (B).
Nova Press
Remember, we are looking for the expression that is NEVER an integer.
It is true that x/7 is not an integer when x = 3, but it is for some values of x. For example, if x = 21, then x/7 = 21/7 = 3.
Hence, the answer is not (B).
Nova Press
Posted: 05/05/2013 02:50
I got it ..Thank you :)
Posted: 07/23/2013 23:09
if x=24 24/24=1 so choice E is correct
Posted: 07/24/2013 01:46
Hi Lee,
The number cannot be divisible by 2, so we cannot chose x to be 24.
Nova Press
The number cannot be divisible by 2, so we cannot chose x to be 24.
Nova Press