Add 9 +5 +1 ....... upto 16 terms.
5.
Add 7+.71+.72 +.73 .... up to 100 terms.
Answers
Answered by
6
Step-by-step explanation:
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Answered by
6
Step-by-step explanation:
a = .7
d = .71 - .7 = .01
Sn = n/2{ 2a + ( n - 1 ) d }
= 100/2 { 2 × .7 + ( 100 - 1 ) .01 }
= 50 { 1.4 + 99 × .01 }
= 50 × 2.39
= 119.5 ans
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