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Fri March 09, 2012 By:

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Fri March 09, 2012
a2 = r.a1 , a3 = r2.a1 , a4 = r3 . a1
similarly,
b1 = a1 , b2 = a1(1+r) , b3 = a1(1+r+r2) , b4 = a1(1+r+r2+r3)
It is clear that b1,b2,b3,b4 are neither in A.P. Nor in G.P.
So statement 1 is corect ,
Also they are not in H.P so statement 2 is incorrect .
Therefore
Ans. is (3)
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