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Railways PYQCBT 1 2016

RRB NTPC · Question 13

If the mathematical operators, ‘ + ’ and ‘ × ’ are interchanged, what will be the value of the equation 9 ÷ 5 + 10 – 23 × 2?

  1. 3

  2. 2

  3. -3

  4. -5

Show answer & explanation

Answer: (C) -3

Explanation

Interchanging + and ×, 9 ÷ 5 + 10 − 23 × 2 becomes 9 ÷ 5 × 10 − 23 + 2. Division and multiplication from left to right: 9 ÷ 5 = 1.8 and 1.8 × 10 = 18. Then 18 − 23 + 2 = −3.