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JAMB Mathematics 2001 Question 47

Question 47

Permutation and Combination

Find the number of ways of selecting 8 subjects from 12 subjects for an examination.

  1. A.498
  2. B.496
  3. C.495
  4. D.490
Show the answer and explanation

Answer: C (495)

Explanation

This is a selection, so use combinations: 12C8 = 12C4 = (12 × 11 × 10 × 9)/24 = 495.