Mark A If the question can be answered by using one of the statements alone, but cannot be answered by using the other statements alone.
Mark B If the question can be answered by using either statement alone.
Mark C If the question can be answered by using both statements together, but cannot be answered by using the either statement alone.
Mark D If the question cannot be answered even by using both the statements together.
What is the value of x, if x and y are consecutive positive even integers ?
(I) (x – y) (x – y) = 4
(II) (x + y) (x + y) < 100

ANS is D

• ans :D.....0 is not a +ve integer.
  so only 2 and 4 will be the possible values.
  but x>y or y>x is not mentioned in ques.
  x=2 or x=4 both is possible .
  x cannot be answer by (ii) either.
  
• 8 years agoHelpfull: Yes(3) No(1)
• ANS is B because we can easily get 2 and 4 by using II
• 8 years agoHelpfull: Yes(2) No(2)
• answer will be D only,
  A.Q,
  In statement (I) there will be infinite values of x and y and in statement(II) there will be 2 value of x and y i.e (0+2) (0+2)
• 8 years agoHelpfull: Yes(2) No(0)
• Ans- c
  becouse from 2 nd equation we find that (2+4)(2+4)
  Because its positive integer so neglect 0 & 2 combination...
  So from both equations we find the solution x-4 , y-2
• 8 years agoHelpfull: Yes(1) No(0)
• i Also thought that but in the solution ans given was D therfore i asked it here
• 8 years agoHelpfull: Yes(0) No(1)
• Answer is D because when x=2,y=4 both I and II holds good. Even when x=2 and y=4 I and also II hold good.
• 8 years agoHelpfull: Yes(0) No(0)
• option D
  eqn 1 says (x-y)= 2
  eqn 2 says (x+y)
• 8 years agoHelpfull: Yes(0) No(0)
• (I) holds for several values of x & y (2&4, 4&6, 8&10....so on)
  (II) holds for only x=2 & y=4 (36
• 8 years agoHelpfull: Yes(0) No(1)
• Ans (D)..
  Here is the solution......
  
  According to first statement.....
  
  x- y = 2 OR x- y = -2 ...
  
  So if you assume any value of 'y' ( eg : y = 4,) then x = 6 OR x= 2 (NO CONCLUSION ON X )
  
  Similarly from second statement... either x + y < 10 OR x+ y > -10 ( NO CONCLUSION)
  
  Hence ans is D..
  
• 8 years agoHelpfull: Yes(0) No(2)
• Answer is D because there is no unique value of x and y. It satisfies many cases, like (4, 2), (6, 4), etc
• 3 years agoHelpfull: Yes(0) No(0)