Question 279805
you need to sum the numbers one through one hundred


there is a straight forward pattern


1 + 100 = 101


2 + 99 = 101


3 + 98 = 101 ___ get the picture?


there will be 50 pairs (100/2)



the general equation for the summation of the first n terms of an arithmetic sequence is ___ s = [n(a1 + an)] / 2
___ a1 is the first term, an is the nth term