Question

Find the Odd one among : 23, 13, 34, 25, 56, 51

• A. 23
• B. 13
• C. 34
• D. 51

Answer 1

The correct option is D 51

The number in the alternate places is the sum of the square of the integer on the other e.g. 13 = $2^2$+$3^2$, 25 = $3^2$+$4^2$. Now 56 + $5^2$ + $6^2$ = 61 Hence in place of 51 it should be 61