Question

A number x is selected at random from the numbers 1, 2,3 and 4
number y is selected at random from the numbers 1, 4, 9 and 16
probability that product of x and y is less than 16.
the numbers 1, 2, 3 and 4. Another
numbers 1, 4, 9 and 16. Find the​

Answer 1

S={1*1 , 1*4 , 1*9 , 1*16 , 2*1 , 2*4 , 2*9 , 2*16 , 3*1 , 3*4 , 3*9 , 3*16 , 4*1 , 4*4 , 4*9 , 4*16 }

n(S) = 16

Product less than 16 ={1*1, 1*4, 1*9, 2*1, 2*4, 3*1, 3*4, 4*1}

n(Product less than 16) = 8

P( Product less than 16 )

= n(Product less than 16)/n(S)

= 8/16

= 1/2

Hope it helps you...