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Railways PYQCBT 2 2017

RRB NTPC · Question 61

If the signs ‘+’ and ‘÷’ and the numbers ‘2’ and ‘4’ are interchanged, which one of the following four equations would be correct?

  1. 4 ÷ 2 + 3 = 6

  2. 2 + 4 ÷ 3 = 3

  3. 4 + 2 ÷ 6 = 1.5

  4. 2 + 4 ÷ 6 = 8

Show answer & explanation

Answer: (D) 2 + 4 ÷ 6 = 8

Explanation

After swapping + with ÷ and 2 with 4, option 4 '2 + 4 ÷ 6 = 8' becomes 4 ÷ 2 + 6 = 2 + 6 = 8, which is correct. For example option 1 becomes 2 + 4 ÷ 3 = 3.33, not 6.