Question

a number x is selected at random from the nos. 1 2 3 4 another no. y is selected at random from the nos. 1 4 9 16 find the probability that product of x and y is less than 16

Answer 1

hello !
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a number x is selected random from 1,2,3,4 
a number y is selected random from 1,4,9,16
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Pairs of x and y that satisfy this condition 
x       y    
1       1    
1       4     
1       9
2       1
2       4
3       1
3       4
4       1
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P(probability that product of x and y is less than 16 ) = 8/16 = 1/2