find the sum of the following APs
0.6,1.7,2.8,... to 100 terma
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Answer:
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Step-by-step explanation:
0.6,1.7,2.8....
a=0.6,d=1.7−0.6=1.1
n=100,S
100
=?
S
n
=
2
n
[2a+(n−1)d]
S
100
=
2
100
[2×0.6+(100−1)(1.1)]
=50[1.2+99(1.1)]
=50[1.2+108.9]
=50×110.1
∴S
100
=5505
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