What is the sum of 44 + 45 + 46 + 47 ... + 142 + 143
Umm You do now there a calculator on here fo you to use?That can help you
n = number of terms = 143 - 44 + 1 = 100
The sum is given by
n ( first term + last term) / 2 =
100 ( 44 + 143)/2 =
50 ( 187) = 9350
We know that 143+44 = 187
We also know that 142+45 = 187
I think you got the idea by now:
We eventually work all the way in giving us 187*50
==== 9350
