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Find the average of the first four prime numbers greater than10

Mathematics
WAEC 2004
Find the average of the first four prime numbers greater than10
  • A. 20
  • B. 19
  • C. 17
  • D. 15
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Correct Answer: Option D
Explanation
First four prime numbers greater than 10 are 11, 13, 17, 19
The average \(= \frac{11+13+17+19}{4}=15\)
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