By interchanging the given two numbers (not digits) which of the following equation will be correct?
3 and 2
I. 3 × 9 + 2 - 8 ÷ 1 = 13
II. 2 × 8 + 3 - 9 ÷ 1 = 17
Show answer & explanation
Correct answer: C
Explanation
Equation I
3 × 9 + 2 − 8 ÷ 1 = 13
If 3 and 2 are interchanged
2 × 9 + 3 − 8 ÷ 1
2 × 9 + 3 − 8
18 + 3 − 8
13 = 13
Equation I is correct.
Equation II
2 × 8 + 3 − 9 ÷ 1 = 17
If 3 and 2 are interchanged
3 × 8 + 2 − 9 ÷ 1
3 × 8 + 2 − 9
24 + 2 − 9
17 = 17
Equation II is also correct.
Conclusion: Both equations are correct.
Correct Answer: Both I and II