CBSE Class 10 Answered
athematic progression
Asked by | 22 Dec, 2009, 02:45: PM
Expert Answer
p, q and 2p
a = p
a+d = q
d =q-p
a+(n-1)d =2p
d = p/(n-1)
q-p = p/(n-1)
so n = q/(q-p)
Sum to n terms = n/2 (first term+last term)= 2q/(q-p)(3p)
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Answered by | 22 Dec, 2009, 03:54: PM
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