Question : Directions: If + means –, – means ÷, ÷ means × and × means +, then what will come in place of the (?) in the following equation?
15 ÷ 405 – 3 + 25 × 5 = ?
Option 1: 1890
Option 2: 2000
Option 3: 2005
Option 4: 1889
Correct Answer: 2005
Solution :
Given:
+ means –, – means ÷, ÷ means × and × means +
15 ÷ 405 – 3 + 25 × 5 = ?
After interchanging the given mathematical signs, we get –
⇒ 15 × 405 ÷ 3 – 25 + 5
⇒ 15 × 135 – 25 + 5
⇒ 2025 – 25 + 5
⇒ 2005
So, 2005 is the answer to the given equation. Hence, the third option is correct.
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