Question:`A xx B` = কত? 

A {(x, y) : x`in`A `yinB`} 
B {(x, y) : y`in`A `xinB`} 
C {(x, y) :` yinA` `xinB`} 
D {(x, y) :` xinA` `yinB`} 

+ Answer
A 

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Irin Moni

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