By interchanging the given two signs which of the following equation will be correct?
× and +
I. 4 × 3 + 6 - 7 ÷ 1 = 15
II. 7 + 5 × 2 - 8 ÷ 4 = 33
Show answer & explanation
Correct answer: C
Explanation
The correct answer is option 3 i.e. Only I.
Given: × and +
I. 4 × 3 + 6 - 7 ÷ 1 = 15
By interchanging the given two signs:
4 + 3 × 6 - (7 ÷ 1) = 15 → 4 + (3 × 6) - 7 = 15 → (4 + 18) - 7 = 15
II. 7 + 5 × 2 - 8 ÷ 4 = 33
By interchanging the given two signs:
7 × 5 + 2 - (8 ÷ 4) = 33 → (7 × 5) + 2 - 2 → (35 + 2) - 2 = 35
Thus, "Only I" equation will be correct.