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How big or small is S?

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How big or small is S?

by varunkh70 » Sat May 01, 2010 1:57 am
12) S = 1 + (½)^2 + (1/3)^2 +. . + (1/10)^2, S is ?

a)S=2
b)S=3
c)S<2
d)S>3
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by beat_gmat_09 » Sat May 01, 2010 2:52 am
varunkh70 wrote:12) S = 1 + (½)^2 + (1/3)^2 +. . + (1/10)^2, S is ?

a)S=2
b)S=3
c)S<2
d)S>3
I'll go for C
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by iamseer » Sat May 01, 2010 3:07 am
IMO C

1+0.25+0.11+(0.62*7) = 1.795

even if we take all the numbers after 4th number to be equal to 1/16 it comes to 1.795.
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by Pdgmat2010 » Sat May 01, 2010 8:07 am
Since the values being added to 1 on the RHS of the equation are squares of proper fractions, their values decrease progressively.

So my guess would be that S < 2.


i.e. C
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