Three of the following four options are alike in a certain way and thus form a group. Which is the one that does NOT belong? (Operations should be per...
Question
Three of the following four options are alike in a certain way and thus form a group. Which is the one that does NOT belong?
(Operations should be performed on the whole numbers, without breaking down the numbers into its constituent digits.)
E.g. 13 – Operations on 13 such as adding/subtracting/multiplying etc. to 13 can be performed. Breaking down 13 into
1 and 3 and then performing mathematical operations on 1 and 3 is not allowed.