Question

If '+' means '—', '—' means '÷', '÷' means '×' and '×' means '+', what will come in place of the question mark (?) in the following equation?

21 + 48 – 8 × 6 ÷ 4 = ?

• A. 38
• B. 40
• C. 37
• D. 39

Answer 1

Answer:

D. 39

The value that will come in place of the question mark is 39.

First, decode the mathematical operators using the given code rules:

* + becomes –

* – becomes ÷

* × becomes +

* ÷ becomes ×

## 1. Substituting the signs into the equation:

* Original: 21 + 48 – 8 × 6 ÷ 4 = ?

* Decoded: 21 – 48 ÷ 8 + 6 × 4 = ?

## 2. Solving using BODMAS rules:

* Step 1: Division (÷)

* 48 ÷ 8 = 6

* The equation becomes: 21 – 6 + 6 × 4

* Step 2: Multiplication (×)

* 6 × 4 = 24

* The equation becomes: 21 – 6 + 24

* Step 3: Addition and Subtraction (+ / –)

* 21 – 6 = 15

* 15 + 24 = 39