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HPSC HCS 2021 · Question 134 of 177

Find the missing number in the matrix: Row 1: 2, 7, 9 (product 126); Row 2: 7, 3, 4 (product 168); Row 3: 9, 8, ? (product 216).

Number Matrix

  1. A8
  2. B3
  3. C6Correct
  4. D36

Answer: C. 6

Explanation

Each row's product is given: 2×7×9=126, 7×3×8=168, so 9×4×?=216 gives ? = 6.

Source: HPSC HCS (Ex.Br.) Prelims Paper-II (CSAT) held 12-Sep-2021 (prepp.in compilation); answers per official HPSC answer key

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