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Which two signs and numbers need to be interchanged to make the following equation correct? (31 × 3) - (27 × 4) + (81 ÷ 9) = 126
Question

Which two signs and numbers need to be interchanged to make the following equation correct?
(31 × 3) - (27 × 4) + (81 ÷ 9) = 126

A.

27 and 81, + and -

B.

31 and 27, + and -

C.

3 and 4, ÷ and +

D.

27 and 9, + and -

Correct option is D

Given equation,
(31 × 3) - (27 × 4) + (81 ÷ 9) = 126
As per question after changing 27 and 9, + and – , apply the BODMAS rule-
(31 × 3) + (9 × 4) - (81 ÷ 27) = 126
93 + 36 – 3 = 126
129 – 3 = 126
126 = 126
Thus, the correct answer is (d).

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