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Numerical Ability
Number System
The sum of two numbers is 2016 and their product is 32 the sum of their reciprocals is
Read Solution (Total 4)
-
- X+y=2016
xy=32
1/x+1/y=x+y/xy=2016/32
=63 - 9 years agoHelpfull: Yes(5) No(0)
- let two no are x,y
x+y=2016 ......(1)
xy=32 ......(2)
therefore
1/x+1/y=x+y/xy=2016/32=63 - 9 years agoHelpfull: Yes(3) No(0)
- Given a+b=2016 ab=32
we Know that (a+b)^2 -(a-b)^2 =4ab substitute a+b &ab in the equation you get a-b.
solve a+b &a-b you get a=2015.984 &b=0.016 and take reciprocal of these numbers you get 62.50049 which is approximately equal to 63 in the option - 8 years agoHelpfull: Yes(1) No(0)
- ans is 63
- 5 years agoHelpfull: Yes(1) No(0)
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