Question

choose the odd one: a)144 b)168 c)196 d)256 give reason

Answer 1

Here is a hint...
12 x 12 = 144
Look at the other answers and see what comes to mind...

Answer 2

I like Ms Pi's answer to the earlier one; i.e. justify and there is no one right answer. For example, all but one start with a 1 which makes d the odd one. OR all but one have a 6 which makes a the odd one.

Answer 3

168