Multiple Choice Questions

Which two numbers should be interchanged to make the given equation correct 8 times 7 minus 42 divid...........

Logical Reasoning (MTS) Arthemetic Operations

Which two numbers should be interchanged to make the given equation correct?

8 × 7 − 42 ÷ 14 × 2 + 21 = 66

This questions was previously asked in

SSC MTS 20th October 2021 Shift-3

14 and 21

2 and 7

14 and 42

7 and 14

To solve the equation, we need to ensure both sides equal 66 by interchanging two numbers. Let's verify the impact of each option:

- Option 1: 14 and 21

Interchanging these would make the equation: 8 × 7 - 42 ÷ 21 × 2 + 14 = 66.

This adjusts operations, leading to the correct total.

- Option 2: 2 and 7

Changing these gives: 8 × 2 - 42 ÷ 14 × 7 + 21, which doesn't produce the correct total.

- Option 3: 14 and 42

With this swap: 8 × 7 - 14 ÷ 42 × 2 + 21, the equation also does not equal 66.

- Option 4: 7 and 14

Switching these results in: 8 × 14 - 42 ÷ 7 × 2 + 21, still incorrect.

Option 1 is the answer.

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