Below are two puzzles to practice for Infosys. Every question is followed by one of the easiest ways to solve it.
Solution for XY(Z+1)-ZY = XY is
a)X=0,Y=0 b)X=1,Y=1 c)Z=0,Y=1 d)X=1,Z=0
Answer : d)X=1,Z=0
Simplifying, XY(Z+1)-ZY = XY
we get, XYZ + XY - ZY = XY
Below are three questions with 3 statements each. You have to interpret these statements and count the number of objects mentioned in the questions.