## Interchange of Signs & Numbers MCQs for Competitive Examination

## Solve the following problems.

**Q. 1**Which two signs of the following equation should be interchanged to make it correct?

16 – 2 ÷ 40 + 4 x 18 = 40

(A) ÷ and –

(B) + and x

(C) + and ÷

(D) – and +

**Answer**: (A) ÷ and –**Explanation**: N/A

**Q. 2**Which two signs of the following equation should be interchanged to make it correct?

12 – 16 x 25 ÷ 80 + 10 = 7

(A) ÷ and x

(B) – and +

(C) x and –

(D) ÷ and –

**Answer**: (B) – and +**Explanation**: N/A

**Q. 3**Which two signs of the following equation should be interchanged to make it correct?

14 + 18 x 40 – 10 ÷ 20 = 66

(A) + and x

(B) + and ÷

(C) – and +

(D) ÷ and –

**Answer**: (D) ÷ and –**Explanation**: N/A

**Q. 4**Which two signs of the following equation should be interchanged to make it correct?

20 + 14 ÷ 35 – 10 x 12 = 10

(A) + and x

(B) + and ÷

(C) – and +

(D) ÷ and x

**Answer**: (A) + and x**Explanation**: N/A

**Q. 5**Which two signs of the following equation should be interchanged to make it correct?

16 ÷ 4 x 8 – 10 + 14 = 12

(A) x and –

(B) ÷ and x

(C) ÷ and –

(D) – and +

**Answer**: (B) ÷ and x**Explanation**: N/A

**Q. 6**Which two signs of the following equation should be interchanged to make it correct?

**3 + 4 – 25 ÷ 2 x 12 = 41**

(A) ÷ and –

(B) + and ÷

(C) x and –

(D) – and +

**Answer**: (C) x and –**Explanation**: N/A

**Q. 7**Which two signs of the following equation should be interchanged to make it correct?

15 x 2 + 10 – 8 ÷ 20 = 15

(A) – and +

(B) ÷ and x

(C) + and ÷

(D) x and –

**Answer**: (C) + and ÷**Explanation**: N/A

**Q. 8**Which two signs of the following equation should be interchanged to make it correct?

12 x 4 – 6 ÷ 7 + 18 = 19

(A) + and x

(B) + and ÷

(C) ÷ and –

(D) – and +

**Answer**: (C) ÷ and –**Explanation**: N/A

**Q. 9**Which two signs of the following equation should be interchanged to make it correct?

14 ÷ 10 x 20 – 40 + 34 = 1

(A) x and –

(B) ÷ and –

(C) ÷ and x

(D) – and +

**Answer**: (C) ÷ and x**Explanation**: N/A

**Q. 10**Which two signs of the following equation should be interchanged to make it correct?

**14 + 16 ÷ 40 x 8 – 48 = 46**

(A) ÷ and x

(B) x and –

(C) ÷ and –

(D) – and +

**Answer**: (A) ÷ and x**Explanation**: N/A

**Q. 11**Which two signs of the following equation should be interchanged to make it correct?

5 + 8 ÷ 40 – 20 x 25 = 6

(A) + and ÷

(B) – and +

(C) + and x

(D) ÷ and x

**Answer**: (C) + and x**Explanation**: N/A

**Q. 12**Which two signs of the following equation should be interchanged to make it correct?

16 ÷ 8 – 5 x 2 + 6 = 9

(A) + and x

(B) + and ÷

(C) – and +

(D) ÷ and x

**Answer**: (A) + and x**Explanation: **N/A

**Q. 13**Which two signs of the following equation should be interchanged to make it correct?

18 – 2 ÷ 20 + 5 x 16 = 69

(A) ÷ and –

(B) + and x

(C) + and ÷

(D) – and +

**Answer**: (A) ÷ and –**Explanation**: N/A

**Q. 14**Which two signs of the following equation should be interchanged to make it correct?

**18 x 12 – 3 ÷ 10 + 2 = 64**

(A) + and x

(B) + and ÷

(C) ÷ and –

(D) – and +

**Answer**: (C) ÷ and –**Explanation**: N/A

**Q. 15**Which two signs of the following equation should be interchanged to make it correct?

**18 + 26 – 25 x 10 ÷ 5 = 42**

(A) – and +

(B) ÷ and x

(C) x and –

(D) ÷ and –

**Answer**: (A) – and + **Explanation**: N/A

**Q. 16**Which two signs of the following equation should be interchanged to make it correct?

**12 + 10 – 28 ÷ 7 x 4 = 48**

(A) ÷ and –

(B) + and ÷

(C) – and +

(D) x and –

**Answer**: (D) x and –**Explanation**: N/A

**Q. 17**Which two signs of the following equation should be interchanged to make it correct?

12 – 6 x 5 + 20 ÷ 4 = 31

(A) + and ÷

(B) + and x

(C) – and +

(D) ÷ and –

**Answer**: (B) + and x**Explanation**: N/A

**Q. 18**Which two signs of the following equation should be interchanged to make it correct?

15 x 18 – 6 ÷ 20 + 4 = 29

(A) + and x

(B) ÷ and –

(C) + and ÷

(D) – and +

**Answer**: (B) ÷ and –**Explanation**: N/A

**Q. 19**

After interchanging + and –, 8 and 7, which one of the following becomes correct?

(A) 2 x 8 + 6 – 9 = 25

(B) 8 – 7 + 3 x 5 = 35

(C) 6 + 8 x 2 – 7 = 0

(D) 8 x 2 + 7 – 6 = 9

**Answer**: (C) 6 + 8 x 2 – 7 = 0**Explanation**: According to the question + ↔ -; 8 ↔ 7

Apply these transformations to all the equations

**Q. 20**Select the correct combination of mathematical signs to replace * signs and to balance the equation.

48 * 4 * 6 * 3 * 30

(A) -, +, =, x

(B) ÷, =, x, +

(C) ÷, +, x, =

(D) -, =, x, +

**Answer**: (C) ÷, +, x, =**Explanation**: N/A