SOLUTION: what if the sum of the first 75 numbers starting with 2? please help me!

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Question 777757: what if the sum of the first 75 numbers starting with 2? please help me!
Answer by mananth(16946) About Me  (Show Source):
You can put this solution on YOUR website!
this is an arithmetic sequence
the sum of n terms is Sn=+N%2F2%282a%2B%28n-1%29d%29
where N= number of terms
a=first term
d is the common difference between two terms
Here a=2,d=1,N=74
Sn = %2874%2F2%29%282%2A2%2B%2874-1%291%29
=37(4+73)
=37(77)
=2849