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Q: Which two numbers should be interchanged to make the given equation correct? (165 ÷ 3) + (135 ÷ 5) – 45 + 33 = 66 (Note: Interchange should be done of entire number and not individual digits of a given number)
  • A. 45 and 33
  • B. 33 and 5
  • C. 165 and 135
  • D. 45 and 3
Correct Answer: Option C - Given equation is - (165 ÷ 3) + (135 ÷ 5) – 45 + 33 = 66 According to option (c), On interchanging the number 165 and 135. (135 ÷ 3) + (165 ÷ 5) – 45 + 33 = 66 45 + 33 – 45 + 33 = 66 33 + 33 = 66 66 = 66 LHS = RHS
C. Given equation is - (165 ÷ 3) + (135 ÷ 5) – 45 + 33 = 66 According to option (c), On interchanging the number 165 and 135. (135 ÷ 3) + (165 ÷ 5) – 45 + 33 = 66 45 + 33 – 45 + 33 = 66 33 + 33 = 66 66 = 66 LHS = RHS

Explanations:

Given equation is - (165 ÷ 3) + (135 ÷ 5) – 45 + 33 = 66 According to option (c), On interchanging the number 165 and 135. (135 ÷ 3) + (165 ÷ 5) – 45 + 33 = 66 45 + 33 – 45 + 33 = 66 33 + 33 = 66 66 = 66 LHS = RHS