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Railways PYQCBT 1 2016

RRB NTPC · Question 44

If ‘÷’ denotes ‘multiplication’, ‘-’ denotes ‘addition’, ‘+’ denotes ‘division’ and ‘×’ denotes ‘subtraction’, then which of the following is the value of the expression 19 ÷ 9 × 51 – 171 + 19 A. 143 B. 129 C. 179 D. 151

  1. B

  2. C

  3. A

  4. D

Show answer & explanation

Answer: (A) B

Explanation

With ÷ → ×, − → +, + → ÷ and × → −, the expression 19 ÷ 9 × 51 − 171 + 19 becomes 19 × 9 − 51 + 171 ÷ 19. Multiplication and division first: 171 and 9. Then 171 − 51 + 9 = 129.