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Numerical Ability
Arithmetic
The value of 3/4 + 5/36 + 7/144 + …….+ 17/5184 + 19/8100 is
a) 0.99
b) 0.98
c) 0.95
d) None of these
Read Solution (Total 6)
-
- convert it into...
[1-1/4]+[1/4-1/9]+[1/9-1/16]+...
=1-1/100
=0.99 - 11 years agoHelpfull: Yes(15) No(0)
- 3/4 + 5/36 + 7/144 + ........+ 17/5184 + 19/8100 = Sum ((1 + 2n) / (n(n+1))^2
where n=1,2..9
sum = 0.99 - 12 years agoHelpfull: Yes(9) No(7)
- i cant understand this pblm
- 12 years agoHelpfull: Yes(4) No(6)
- observe the series an prime no in the numerator and a perfect square in the denominator so in general nr=1+2n.dr=n(n+1)^2,n=1,2,3,....9....sum is 0.99
- 10 years agoHelpfull: Yes(1) No(0)
- how to come 1-1/100
- 10 years agoHelpfull: Yes(0) No(0)
- u can writre the statement as
1-(1/4)=3/4
1/4-(1/9)=5/36
1/9-(1/16)=7/144
so continuing like that we get
1-(1/100)=.99 - 6 years agoHelpfull: Yes(0) No(0)
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