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.)

A 18 – 166
B 31 – 283
C 14 – 130
D 23 – 217
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