Capgemini
Company
Numerical Ability
Number System
the addition of 2 number difference of 2 number is a perfect square 7 the diff of both perfect square also a perfect square. Then find out this no.
Read Solution (Total 1)
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- This problem is based on assumption..
let two numbers be x and y, two perfect squares as a^2 and b^2
x+y=a^2
x-y=b^2
a^2-b^2=c^2
x+y-x+y=c^2
2y=c^2
now fa dis strategy x=17 and y=8 will suit neatly
so dat x+y=25(perfect square)
x-y=9(perfect square)
25-9=16(perfect square)
- 11 years agoHelpfull: Yes(44) No(12)
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