(06/12/15)
1. X,Y is odd number, A,B is even number so value of 1/8[(X^2+y^2)*(A^2+B^2)] value is?
a)odd no
b)fraction no
c)even & odd both
d)factorial no.

i think option was this...

• c) can be even and odd both
  
  for even,
  (1^2+3^2)*(2^2+6^2)=(1+9)*(4+36)=400
  and 400/8=50 is even
  
  for odd,
  one possibility is,
  (1+9)*(4+16)=200
  and,
  200/8=25 is odd
• 9 years agoHelpfull: Yes(11) No(0)
• c) can be even or odd
• 9 years agoHelpfull: Yes(9) No(1)
• c) even and odd both is correct ans. If u solved it in exam then u will definitely get 10 mark.
• 9 years agoHelpfull: Yes(5) No(1)
• It can only be EVEN.
  Because
  1. x/8 is always even as any number divisble by even is always even
  2.(X^2+y^2) is always even because odd^2 is always odd nd sum of 2 odd numbers is always even.
  like 3^2+5^2=9+25=36
  3.(A^2+B^2) is always even because even^2 is always even and sum of two even number always even.
  4.(X^2+y^2)*(A^2+B^2) is always even because even*even always even.
  Therefore,
  5. Value=Even/Even
  ALWAYS EVEN(which is not in option)..............................u can check any point by putting any value.
• 9 years agoHelpfull: Yes(3) No(10)
• it will be odd number
• 9 years agoHelpfull: Yes(2) No(1)
• a). odd no only
• 9 years agoHelpfull: Yes(1) No(1)
• c)even & odd both
  
• 9 years agoHelpfull: Yes(1) No(0)
• for solution to be EVEN take 1, 3, 2, 4
  for solution to be EVEN take 1, 5, 2, 4
• 9 years agoHelpfull: Yes(1) No(1)
• c)even & odd both
• 9 years agoHelpfull: Yes(1) No(0)
• c) can be even or odd
• 9 years agoHelpfull: Yes(1) No(1)
• vikas kumar.....when u devide your even result by 8,then u can not determine result will be odd or even, so it may be both...got it?
  
• 8 years agoHelpfull: Yes(1) No(0)
• can anyone tell me how it is even? what combination makes it even??
• 9 years agoHelpfull: Yes(0) No(0)
• for which value it is even ??????
• 9 years agoHelpfull: Yes(0) No(0)
• only odd....you can take 1,3,2,4 & 1,5,2,4 & 3,5,4,6....& so on
• 9 years agoHelpfull: Yes(0) No(3)
• 1/8[(odd+odd)*(even+even)]
  1/8[even]
  either even or ood
• 8 years agoHelpfull: Yes(0) No(0)
• take x and y as 1 and 3,a and b as 2 and 4.
  1/8*(1+9)*(4+16)=(1/8)*30=a fraction number.
  odd-even is also possible with different example
• 8 years agoHelpfull: Yes(0) No(1)
• even or odd both as 1/8[even]= even or odd
• 8 years agoHelpfull: Yes(0) No(0)
• always even bcz even square is always even and odd square is always odd.and we also know that odd+odd= even, and even +even=even .and even multiply even is always even .so answer is always even.
• 8 years agoHelpfull: Yes(0) No(0)