Question : Directions: If + means –, – means ×, × means ÷, ÷ means +, then what will come in place of the question mark (?) in the following equation?
61 ÷ 9 × 3 – 8 + 5 = ?
Option 1: 80
Option 2: 75
Option 3: 89
Option 4: 72
Correct Answer: 80
Solution :
Given:
+ means –, – means ×, × means ÷, ÷ means +
61 ÷ 9 × 3 – 8 + 5 = ?
After interchanging the given mathematical signs, we get –
⇒ 61 + 9 ÷ 3 × 8 – 5
⇒ 61 + 3 × 8 – 5
⇒ 61 + 24 – 5
= 80
So, 80 is the answer to the given equation. Hence, the first option is correct.
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