Question : Directions: If + means –, – means ×, × means ÷, ÷ means +, then what will come in place of the question mark (?) in the following equation?
39 × 3 – 11 ÷ 57 + 29 = ?
Option 1: 163
Option 2: 190
Option 3: 185
Option 4: 171
Correct Answer: 171
Solution :
Given:
+ means –, – means ×, × means ÷, ÷ means +
39 × 3 – 11 ÷ 57 + 29 = ?
After interchanging the given mathematical signs, we get –
⇒ 39 ÷ 3 × 11 + 57 – 29
⇒ 13 × 11 + 57 – 29
⇒ 143 + 57 – 29
= 171
So, 171 is the answer to the given equation. Hence, the fourth option is correct.
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