Direction: In each of the following problems, four groups of numbers are given of which three are alike in some way, while the rest one is different. Choose out the different one. |
A) 42
B) 31
C) 63
D) 84
Correct Answer: B
Solution :
: In others, the ten's digit is twice the one's digit.You need to login to perform this action.
You will be redirected in
3 sec