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Question : Directions: After interchanging which two numbers, the value of the given equation will be 5.
7 – 3 ÷ 9 × 2 + 4

Option 1: 2 and 9

Option 2: 7 and 4

Option 3: 3 and 9

Option 4: 4 and 2


Team Careers360 23rd Jan, 2024
Answer (1)
Team Careers360 24th Jan, 2024

Correct Answer: 3 and 9


Solution : Given:
7 – 3 ÷ 9 × 2 + 4

Interchange the numbers according to the options.
Let's check the options –

First option: 2 and 9
= 7 – 3 ÷ 2 × 9 + 4
= 7 – 1.5 × 9 + 4
= –2.5 ≠ 5
Second option: 7 and 4
= 4 – 3 ÷ 9 × 2 + 7
= 4 – 0.666 +7
= 10.334 ≠ 5
Third Option: 3 and 9
= 7 – 9 ÷ 3 × 2 + 4
= 7 – 6 + 4
= 5
Fourth Option: 4 and 2
= 7 – 3 ÷ 9 × 4 + 2
= 7 – 1.333 + 2
= 7.667 ≠ 5

So, only the third option satisfies the equation. Hence, the third option is correct.

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