Question : Directions: If + means −, − means ×, × means ÷ and ÷ means +, what will come in place of (?) in the following equation?
42 × 7 − 11 ÷ 57 + 10 = ?
Option 1: 133
Option 2: 113
Option 3: 103
Option 4: 123
Correct Answer: 113
Solution :
Given:
+ means −, − means ×, × means ÷ and ÷ means +
42 × 7 − 11 ÷ 57 + 10 = ?
After interchanging the given mathematical signs, we get –
42 ÷ 7 × 11 + 57 – 10
6 × 11 + 57 – 10
66 + 57 – 10
= 113
So, 113 is the answer to the given equation. Hence, the second option is correct.
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