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WAEC Mathematics 2004 Question 31

Question 31

Measures of Central Tendency

Find the average of the first four prime numbers greater than 10

  1. A.20
  2. B.19
  3. C.17
  4. D.15
Show the answer and explanation

Answer: D (15)

Explanation

The primes are 11, 13, 17 and 19; their sum is 60, and 60 ÷ 4 = 15.