Question
In a certain code language, ‘+’ means ×’, ‘–’ means ‘+’, ×’ means ‘÷’ and ‘÷’ means ‘–’. Based on the above facts, solve the following question.
642 × 6 – 4 ÷ 25 + 4 = ?
A. 18
B. 11
C. 64
D. 7
Answer: B. 11
Solution:
The given equation is : 642 × 6 – 4 ÷ 25 + 4
After changing the mathematical operators the equation will become:
= 642 ÷ 6 + 4 – 25 × 4
= 107 + 4 – 25 × 4
= 107 + 4 – 100
= 111 – 100
= 11
As the obtained number is “11”.
Hence, the correct answer is “11“.
Related To:
If × means ÷, – means ×, ÷ means + and + means- then (3 – 15 ÷ 19) × 8 + 6 = ?