If A, X, Y, and Z are unique nonzero digits in the equation: XY* YX= AYZ And Y > X, the 2-digit number XY = ?
a)13
b)21
c)23
d)24

• ans:With abstract calculation problems, start with what you know. Here, you know a few things:
  -you’re multiplying two 2-digit numbers and in doing so you’ll end up with a 3-digit number
  -the units digit of the solution is different from the units digit of either number in the problem (which means you cannot use 1)
  -the two numbers you’re multiplying are in the form that the digits are the same, just flipped
  This means that A and B are both eliminated (you cannot have a units digit of 1, or the units digit in the answer would be either X or Y). And then try choice D: 42 * 24 is greater than 1000, so its answer will have more than three digits. The same, then, is true of choice E (52 * 25 is bigger than 42 * 24), so choice C is the only plausible answer.
• 12 years agoHelpfull: Yes(25) No(1)
• 23...
  x=2,y=3
  23*32=736
• 12 years agoHelpfull: Yes(17) No(3)
• xy*yx=ayz
  if we take 13*31 =403 here y=3 and z= 3 so this is wrong
  in 21 y < x not valid by question
  23*32=736 here a=7,x=2,y=3,z=6 all are unique so answer is
  23 answer
• 12 years agoHelpfull: Yes(6) No(0)
• 23 is the answer
• 12 years agoHelpfull: Yes(2) No(1)
• check all options only c satisfied a given condition i.e 23*32=736 y in middle so answer is c.
• 11 years agoHelpfull: Yes(2) No(0)
• go with option only 23 full fill the con
• 12 years agoHelpfull: Yes(1) No(0)
• @tanushri,@lala 3 is repeating in the answr..how r they unique?
  
• 12 years agoHelpfull: Yes(1) No(0)
• xy*yx=ayz
  if we take 13*31 =403 here y=3 and z= 3 so this is wrong
  in 21 y
• 12 years agoHelpfull: Yes(0) No(3)