By interchanging the given two signs and numbers which of the following equation will be correct?
+ and –, 7 and 6

This question was previously asked in
SSC CGL 2022 Tier-I Official Paper (Held On : 06 Dec 2022 Shift 4)
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  1. 4 × 7 + 6 – 3 ÷ 1 = 20
  2. 8 × 7 + 5 ÷ 1 – 6 = 17
  3. 7 – 6 × 3 + 4 ÷ 1 = 8
  4. 7 × 2 – 6 + 4 ÷ 2 = 13

Answer (Detailed Solution Below)

Option 1 : 4 × 7 + 6 – 3 ÷ 1 = 20
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Detailed Solution

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According to BODMAS rule,

qImage11156

By interchanging signs + and –, 7 and 6 by one by one option

1) 4 × 7 + 6 – 3 ÷ 1 = 20

4 × 6 - 7 + 3 ÷ 1 = 20

4 × 6 - 7 + 3 = 20

24 - 7 + 3 = 20

27 - 7 = 20

20 = 20

2) 8 × 7 + 5 ÷ 1 – 6 = 17

8 × 6 - 5 ÷ 1 + 7 = 17

48 - 5 + 7 = 17 

50  17

3) 7 – 6 × 3 + 4 ÷ 1 = 8

 6 + 7 × 34 ÷ 1 = 8

6 + 21 - 4 = 8

23  8

4) 7 × 2 – 6 + 4 ÷ 2 = 13

6 × 2 + 7 - 4 ÷ 2 = 13

12 + 7 - 2 = 13

17 ≠ 13

Hence, the correct answer is "Option 1".

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