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Railways PYQCBT 1 2016

RRB NTPC · Question 72

Which one of the following interchanges in signs and numbers would make the given equation correct? 3 + 5 – 2 = 4

  1. + and -, 2 and 5

  2. + and -, 3 and 4

  3. + and -, 2 and 3

  4. + and -, 3 and 5

Show answer & explanation

Answer: (D) + and -, 3 and 5

Explanation

Interchanging + and − and the numbers 3 and 5 turns 3 + 5 − 2 = 4 into 5 − 3 + 2 = 4, which is true. The other interchanges do not give 4.