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SSC MTS 2022 · PYQ · Mathematical Operations · medium

By Interchanging the given two numbers which of the following equation will be correct? 1 and 6 I. 7 – 5 + 1 × 3 ÷ 6 = 20 II. 1 × 7 + 6 – 4 ÷ 2 = 40

Answer

The correct answer is D: Only I. Swapping 1 and 6 in equation I: 7 – 5 + 6 × 3 ÷ 1 = 7 – 5 + 18 = 20 ✓. For equation II: 6 × 7 + 1 – 4 ÷ 2 = 42 + 1 – 2 = 41 ≠ 40.

  1. A.Neither I nor II
  2. B.Only II
  3. C.Both I and II
  4. D.Only I✓ Correct

Explanation

Swapping 1 and 6 in equation I: 7 – 5 + 6 × 3 ÷ 1 = 7 – 5 + 18 = 20 ✓. For equation II: 6 × 7 + 1 – 4 ÷ 2 = 42 + 1 – 2 = 41 ≠ 40. So only equation I holds.
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