The mean of first ten prime numbers is:
Answer & explanation
Correct answer: option 2
The correct answer is Option (2) → 12.9
The mean is the sum of the numbers divided by how many there are. The list starts at 2, the first prime; 1 is not a prime.
First ten primes: 2, 3, 5, 7, 11, 13, 17, 19, 23, 29
Their sum: \(2+3+5+7+11+13+17+19+23+29=129\)
Dividing the sum by the count of ten numbers: \(129\div10=12.9\)