3.1415926535897932384626433832795 - is the value of Pi to 31 decimal places.
first you get thre green aand
The sum of the first 25 prime numbers is 1,060.
3.141592653589793238462643
By using the formula for an arithmetic series. This is basically obtained by reasoning: The sum of the first 25 numbers is the same as 25 multiplied by the average of those numbers; the average in this case is simply (1 + 25) / 2.
625
Because it is a circle. You don't say .25 of your friend's head, you say 25%. It's pretty much just the way things go...
The sum of the first n odd numbers is n squared. 25 x 25 = 625
The first 5 square numbers are 1, 4, 9, 16, and 25.
25%
There are three: 1, 5 and 25.
The sum of the first 25 prime numbers is 1,060.
The sum of the first 25 numbers is 25*26/2 = 325 So the sum of the first 25 multiples of 12 is 325*12 = 3900