Instructions

In the questions below, if the given interchanges are made in signs and numbers, which one of the four answer choices would be correct ?

Question 121

Given interchanges : signs + and - and numbers 8 and 2.

Solution

Here, + <-> - and 8 <-> 2

(A) : 2 - 8 + 6 = 8 + 2 - 6 = 4 = R.H.S.

(B) : 2 - 8 + 7 = 8 + 2 - 7 = 3 $$\neq$$ R.H.S.

(C) : 2 + 8 - 9 = 8 - 2 + 9 = 15 $$\neq$$ R.H.S.

(D) : 2 - 8 + 4 = 8 + 2 - 4 = 6 $$\neq$$ R.H.S.

=> Ans - (A)

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