What is the median of the first ten prime numbers?
MATHEMATICS
SAT 2021
What is the median of the first ten prime numbers?
- A. 19
- B. 22
- C. 16
- D. 12
Correct Answer: D. 12
Explanation
To answer this question, you need to know the first ten prime numbers! Remember, prime numbers are all of the integers that are divisible only by themselves and by 1. They do not include 1. So, our list is: 2, 3, 5, 7, 11, 13, 17, 19, 23, 29 The median is the middle value. There is no proper middle since we have an even number of values. We need to take the 5th and the 6th elements (the middle two values) and average them. The 5th term is 11 and the 6th is 13; therefore, the median is: 11+13/2=24/2=12
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