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Railways PYQCBT 1 2016

RRB NTPC · Question 40

Replace # sign with the mathematical operations '+', '÷' '-' and '=' to get a balanced equation out of (27 # 15 # 2) # 10 # 4. Choose the right sequence from below. A. + ÷ = - B. - + = ÷ C. + - ÷ = D. + = ÷ -

  1. B

  2. A

  3. C

  4. D

Show answer & explanation

Answer: (C) C

Explanation

With + − ÷ = the expression becomes (27 + 15 − 2) ÷ 10 = 4: the bracket is 40, and 40 ÷ 10 = 4, so it balances. The other orders do not give a true equation.