Question
Three of the following number pairs are alike in some
manner and hence form a group. Which number pair does NOT belong to that group? (NOTE : Operations should be performed on the whole numbers, without breaking down the number 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.)Solution
The logic is follwed here- 18 x 9 = 162 + 4 = 166 31 x 9 = 279 + 4 = 283 14 x 9 = 126 + 4 = 130 23 x 9 = 207 +10 = 217
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