Which of the two numbers (Not digits) should be interchanged in the below equation to make it mathematically correct?
42 ÷ 3 × 6 + 9 - 7 = 23
Show answer & explanation
Correct answer: D
Explanation
The Correct answer is option 4 i.e. 3 and 6
Given:
42 ÷ 3 × 6 + 9 - 7 = 23
(1) 7 and 9
42 ÷ 3 × 6 + 7 - 9
= 82
82 is not equal to 23
Here, the equation is not satisfied.
(2) 3 and 7
42 ÷ 7 × 6 + 9 - 3
= 42
42 is not equal to 23
Here, the equation is not satisfied.
(3) 6 and 7
42 ÷ 3 × 7 + 9 - 6
= 101
101 is not equal to 23
Here, the equation is not satisfied.
(4) 3 and 6
42 ÷ 6 × 3 + 9 - 7
= 23
23 is equal to 23
Hence, the correct answer is 3 and 6.