Question
Three of the following four are alike in a certain way
and thus form a group. Which is the one that does NOT belong to that group? (NOTE: 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 1and 3 is not allowed)Solution
14 x 9 = 126 31 x 9 = 279 25 x 9 = 225 12 x 9 = 108
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