19 numbers.
64
There are two perfect numbers, 6 and 28, that are less than 100.
Four. 13 = 1 23 = 8 33 = 27 43 = 64
'from 100' ??? If you mean 'less than 100' then there are 25 primes. If you mean 'more than 100' then the answer is infinite, just like numbers are infinite.
101
Cube numbers are numbers that can be expressed as the cube (third power) of an integer. To find the cube numbers between 50 and 100, you can calculate the cubes of integers from 4 to 5. The cube of 4 is 4^3 = 4 x 4 x 4 = 64. The cube of 5 is 5^3 = 5 x 5 x 5 = 125. So, the cube numbers between 50 and 100 are 64 and 125. However, since 125 is greater than 100, it is not within the specified range. Therefore, the only cube number between 50 and 100 is 64.
19 numbers.
Square: 1,4,9,16,25,36,49,64,81,and 100 cube: sorry?!?
64
25
There are two perfect numbers, 6 and 28, that are less than 100.
60,65 and 72
Well, darling, let's break it down for you. The cube root of 100 is 5, and the cube root of 400 is 7. So, the cube numbers between 100 and 400 are 125 (5^3), 216 (6^3), and 343 (7^3). Voilà!
25 now.
The sum of the first 100 cubed numbers is 25,502,500.
The 3 digit numbers under 500 are 100 through 499.