Find the sum of the following APs:
(1) 2,7,12,..., to 10 terms.
(ii) 0.6,1.7.2.8....to 100 terms .
Answers
Answered by
1
SUMMATION OF n TERMS IN AN AP=
n/2[2a+(n-1)d]
1) a=2 d=5 n=10
2) question is not clear
sorry for that
plzz solve further....
Answered by
1
Answer:
S10 =n/2(2a+n-1xd)
10/2(2x2+10-1x5)
5(4+9x5)
5x39
=195
Explanation:
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