(43 - 6) , (28 - 4) , (50 - 7) , (36 - 5) - Choose odd Number Pair / Group - Classification

Choose or find odd number pair

(43 - 6) , (28 - 4) , (50 - 7) , (36 - 5)

A. 43 - 6

B. 28 - 4

C. 50 - 7

D. 36 - 5

Answer: B . 28 - 4

Justification: In all other pairs, 1st number-1/7 = 2nd number.