38.5
16,17,18,19,20,21,22,23,24,25.
The average of the first ten prime numbers is 12.9.
There are infinitely many squares.The first ten are:149162536496481100
1, 2, 3, 4, 5, 6, 7, 8, 9, and 10.
Those would be the squares of prime numbers: 22, 32, 52, etc.
4 & 9
2520 is the smallest multiple of of first ten natural numbers.
Square numbers 1, 4, 9, 16, 25, 36, 49, 64, 81, 100
1; 4; 9; 16; 25; 36; 49; 64; 81; 100
because it is the square root of ten it has a lot of numbers for accuracy
Just add them together, and divide the result by 10. (For the average of a larger set of consecutive odd numbers, it's faster to use the formula for an arithmetic series to add them up. Also, the average of such a set is the same as if you just average the first and the last number.)
Add them up and divide that total by ten. 4, 6, 8, 9, 10, 12, 14, 15, 16, 18