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

Mathematics
JAMB 2018

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

  • A. 20
  • B. 19
  • C. 17
  • D. 15
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Correct Answer: Option D
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

  = \(frac{(11 + 13 + 17 + 19)}{4}\)

  = \(\frac{60}{4}\)

  = 15

 

There is an explanation video available below.


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Explanation Video

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