Question

probability of 1,2,4,9 is equal to x and probability of 1,3,4,9is equalto y.
probability of product of x and y is less than 16
p(xy)<16

Answer 1

fav outcomes=(1,1),(1,3),(1,4),(1,9),(2,1),(2,3),(2,4),(2,9),(4,1),(4,3),(4,4),(4,9),(9,1),(9,3),(9,4),(9,9)
but we have to find only those nos which are less then 16
so there are only 9 nos which are less than 16
so probability is 9/16