search
arrow-left Previous
Next arrow-right
Q: Which two numbers should be interchanged to make the given equation correct? 35 + (25 × 3 − 45) ÷ 2 + (15 × 4) = 125 (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. 15 and 25
  • B. 35 and 45
  • C. 25 and 35
  • D. 2 and 15
Correct Answer: Option B - Given, 35 + (25 x 3 - 45) ÷ 2 + (15x4) = 125 As per the question, on changing the number from 'option (b)' ⇒ 45 + (25 × 3 - 35) ÷ 2 + (15 × 4) = 125 ⇒ 45 + (40) ÷ 2 + 60 = 125 ⇒45 + 20 + 60 = 125 ⇒ 125 = 125 Hence 'option' (b) is correct.
B. Given, 35 + (25 x 3 - 45) ÷ 2 + (15x4) = 125 As per the question, on changing the number from 'option (b)' ⇒ 45 + (25 × 3 - 35) ÷ 2 + (15 × 4) = 125 ⇒ 45 + (40) ÷ 2 + 60 = 125 ⇒45 + 20 + 60 = 125 ⇒ 125 = 125 Hence 'option' (b) is correct.

Explanations:

Given, 35 + (25 x 3 - 45) ÷ 2 + (15x4) = 125 As per the question, on changing the number from 'option (b)' ⇒ 45 + (25 × 3 - 35) ÷ 2 + (15 × 4) = 125 ⇒ 45 + (40) ÷ 2 + 60 = 125 ⇒45 + 20 + 60 = 125 ⇒ 125 = 125 Hence 'option' (b) is correct.