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Q: Which two numbers should be interchanged to make the given equation correct? 29 + 46 − (48 ÷ 4) + (7 × 3) − 26 = 61 (NOTE: Numbers must be interchanged and not the constituent digits e.g. if 2 and 3 are to be interchanged in the equation 43 × 3 + 4 ÷ 2, then interchanged equation is 43 × 2 + 4 ÷ 3)
  • A. 46 and 26
  • B. 46 and 48
  • C. 26 and 29
  • D. 4 and 3
Correct Answer: Option D - Given, 29 + 46 - (48 ÷ 4) + (7 X 3) - 26 = 61 Now, from option (d) 29 + 46 - (48 ÷ 3) + (7 X 4) - 26 = 61 29 + 46 - (16) + 28 - 26 = 61 103 - 42 = 61 61 = 61 L.H.S. = R.H.S.
D. Given, 29 + 46 - (48 ÷ 4) + (7 X 3) - 26 = 61 Now, from option (d) 29 + 46 - (48 ÷ 3) + (7 X 4) - 26 = 61 29 + 46 - (16) + 28 - 26 = 61 103 - 42 = 61 61 = 61 L.H.S. = R.H.S.

Explanations:

Given, 29 + 46 - (48 ÷ 4) + (7 X 3) - 26 = 61 Now, from option (d) 29 + 46 - (48 ÷ 3) + (7 X 4) - 26 = 61 29 + 46 - (16) + 28 - 26 = 61 103 - 42 = 61 61 = 61 L.H.S. = R.H.S.