Q1) If 25 tickets are sold and 2 prizes are to be awarded, determine the probability that one person will win both prizes if that person purchases exactly 2 tickets.

i) 1/300   

ii) 1/600   

iii) 1/700   

iv) 1/2300

Q2) Determine mean of distribution shown.

i) 0.96   

ii) 1.42   

iii) 1.18   

iv) 1.69

Q3) Give the mean of following probability distribution?

i) 1.20    

ii) 1.46    

iii) 3.15     

iv) 2.13