What will come in the place of the question mark (?) in the following equation if ‘+’ and ‘−' are interchanged and ‘÷’ and ‘×’ are interchanged?

51 − 8 ÷ 2 + 6 × 2 = ?

Correct option is C

Given:

51 − 8 ÷ 2 + 6 × 2 = ?
if ‘+’ and ‘−' are interchanged and also ‘÷’ and ‘×’ are interchanged.
then modified equation will be:
51+8×2−6÷2
=51+16−3
=67−3
=64
Thus, Option C is the correct answer.