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SSC MTS 2018 · PYQ · Mathematical Operations · medium

By interchanging the given two signs (÷ and +) which of the following equation will be incorrect?

Answer

The correct answer is B: 9 ÷ 11 + 11 × 2 = 9. Swapping ÷ and + in equation (c): 9 + 11 ÷ 11 × 2 = 9 + 1 × 2 = 9 + 2 = 11 ≠ 9. This equation becomes incorrect after interchanging the signs.

  1. A.12 ÷ 9 × 31 + 3 = 105
  2. B.9 ÷ 11 + 11 × 2 = 9✓ Correct
  3. C.7 × 16 + 4 ÷ 5 = 33
  4. D.6 × 11 + 2 ÷ 5 = 38

Explanation

Swapping ÷ and + in equation (c): 9 + 11 ÷ 11 × 2 = 9 + 1 × 2 = 9 + 2 = 11 ≠ 9. This equation becomes incorrect after interchanging the signs.
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