WAEC - Mathematics (2004 - No. 31)
Find the average of the first four prime numbers greater than10
20
19
17
15
Explication
First four prime numbers greater than 10 are 11, 13, 17, 19
The average \(= \frac{11+13+17+19}{4}=15\)
The average \(= \frac{11+13+17+19}{4}=15\)