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Q: On interchanging the given two numbers, what will be the respective values of equation (I) and (II)? 7 and 8 I. 5 x 7 + 6 ÷ 2 – 8 II. 8 + 3 x 7 – 5 ÷ 1
  • A. 36 and 26
  • B. 20 and 18
  • C. 20 and 19
  • D. 36 and 16
Correct Answer: Option A - (I) 5 × 7 + 6 ÷ 2 – 8 Value of equation I by interchanging 7 and 8 = 5 × 8 + 6 ÷ 2 – 7 = 40 + 3 – 7 = 36 (II) 8 + 3 × 7 – 5 ÷ 1 Value of equation II by interchanging 7 and 8 = 7 + 3 × 8 – 5 ÷ 1 = 7 + 24 – 5 = 7 + 19 = 26 Hence, option (a) 36 and 26 are correct.
A. (I) 5 × 7 + 6 ÷ 2 – 8 Value of equation I by interchanging 7 and 8 = 5 × 8 + 6 ÷ 2 – 7 = 40 + 3 – 7 = 36 (II) 8 + 3 × 7 – 5 ÷ 1 Value of equation II by interchanging 7 and 8 = 7 + 3 × 8 – 5 ÷ 1 = 7 + 24 – 5 = 7 + 19 = 26 Hence, option (a) 36 and 26 are correct.

Explanations:

(I) 5 × 7 + 6 ÷ 2 – 8 Value of equation I by interchanging 7 and 8 = 5 × 8 + 6 ÷ 2 – 7 = 40 + 3 – 7 = 36 (II) 8 + 3 × 7 – 5 ÷ 1 Value of equation II by interchanging 7 and 8 = 7 + 3 × 8 – 5 ÷ 1 = 7 + 24 – 5 = 7 + 19 = 26 Hence, option (a) 36 and 26 are correct.