Complete the series....1, 4, 9, 25, ...A. 47B. 49C. 64D. none

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Dips

  • Jul 6th, 2005
 

sqr(3+5) = 64

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gaurav

  • Jul 24th, 2006
 

1 is not a prime number........and the answer is 64

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swapnil

  • Nov 2nd, 2006
 

ans. is none

because 1,4,9,25,....... is series of squres of 1,2,3,4,.....

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AKSHAYIT

  • Dec 10th, 2006
 

it is not a series of prime no.s as 1 is not a prime no.and second explanation is also somewhat wrong as this would have been more appropriate if we would have got 1,1,4,9,25 or even 0,1,1,4,9,25.as 1=1^24=(1+1)^2 // how do we get this second 1 in 1+1 9=(2+1)^225=(3+2)^249=(5+2)^2

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Rakesh

  • Mar 24th, 2007
 

As per my thnkng,ans is 64.

bcz series is 1,4,9,25,----.ok
v cn manage 1's square,2's square,3's square (2+1=3),5's square(3+2=5),-----'s square(5+3=8).
hence 8's square is 64.

its like fibonacci series which require minimum two no.s to start n frst two no.s are 1 n 2.

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