### 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 = ?

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 = ?**