Question : Directions: If × means –, + means ÷, – means +, and ÷ means ×, what will be the value of the following expression?
40 + [{(24 – 12) × (2 ÷ 2)} + (18 × 10)] = ?
Option 1: 10
Option 2: 20
Option 3: 1
Option 4: 5
Correct Answer: 10
Solution :
Given:
40 + [{(24 – 12) × (2 ÷ 2)} + (18 × 10)] = ?
After interchanging the given mathematical signs, we get –
= 40 ÷ [{(24 + 12) – (2 × 2)} ÷ (18 – 10)]
= 40 ÷ [{36 – 4} ÷ 8]
= 40 ÷ [32 ÷ 8]
= 40 ÷ 4
= 10
So, 10 is the answer to the given equation. Hence, the first option is correct.
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