Find sum of the following series 0.7+0.71+0.72+_ _ _ _ _ _ _ _ to 21 terms
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given, a= 0.7 d=0.01 &n= 21
sum of a.p. = a+(n-1)d
= 0.7+(21-1)0.01
= 0.7+20×0.01
= 0.9
sum of a.p. = a+(n-1)d
= 0.7+(21-1)0.01
= 0.7+20×0.01
= 0.9
vishu543:
yes i am sure for answer
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