find the sum of AP 1,2,3,4 upto 100 terms
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Answer:
5050
Step-by-step explanation:
AP= 1,2,3,4.....
a=1 d=1 n=100
Sn= n/2 x [2a+(n-1)d]
=100/2 x [2x1 + (100-1)1]
=50 x [2 + 99]
=50 x 101
=5050
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