CBSE Class 11-science Answered
Sum of n terms of G.P
Asked by ravikiran | 11 Jul, 2009, 06:33: PM
Expert Answer
if a is the first term and l is the last term of an A.P. then,
sum to n terms
=n/2[a+l]
so
[n/2][66]=126
solving this we get
n=42/11
which is a fraction, so it's not possible.
so pl chk the question again and resend it.
Answered by | 14 Jul, 2009, 08:28: AM
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