To get the arithmetic mean, sum them up and divide by the count (in this case 10). So we have 12 + 14 + 15 + 16 + 18 + 20 + 21 + 22 + 24 + 25 = 187. Divide by 10 is 18.7
The set of composite numbers includes all whole numbers greater than 1 that are not prime numbers. The first few composite numbers are 2, 4, 6, 8, 11, 13, etc.
The first composite number is 4.
The first 6 composite numbers are 4, 6, 8, 9, 10, and 12.
The first number is odd, the second is odd. Odd + Odd = Even ie the sum is even. Either number is greater than 2 so their sum is greater than 2. All even numbers greater than 2 are composite.
120
The set of composite numbers includes all whole numbers greater than 1 that are not prime numbers. The first few composite numbers are 2, 4, 6, 8, 11, 13, etc.
12, 16, 20
the answer of the first 4 composite numbers is 27
The first composite number is 4.
Any two numbers can have only one arithmetic mean. If the numbers are x and y, then their arithmetic mean is (x + y)/2.
21 22 24 25 26 27 28 30 32 33
The first composite number greater than 21 is 22.
33 is the first composite number that is greater than 30 but is not a multiple of 2
4 is the first composite number greater than 1.
4
the answer is 120 because the first three prime numbers are 2,3,5 and the first three composite numbers are 4,6,8.
The first 6 composite numbers are 4, 6, 8, 9, 10, and 12.