passpadi

2018

Mathematics

JAMB

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

A.

20

B.

19

C.

17

D.

15

Correct Answer: 15

Explanation

Prime numbers are numbers that has only two factors (i.e 1 and itself). They are numbers that are only divisible by 1 and their selves. First four Prime numbers greater than 10 are 11, 13, 17 and 19 Average = sum of numbers / number = (11+13+17+19)4 = 60/4 = 15

Prime numbers are numbers that has only two factors (i.e 1 and itself). They are numbers that are only divisible by 1 and their selves. First four Prime numbers greater than 10 are 11, 13, 17 and 19 Average = sum of numbers / number = (11+13+17+19)4 = 60/4 = 15
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