a. Five different types of ice-creams and six different types offruits are available to make a Blizzard. The Blizzard will contain3 types of ice-creams and 2 types of fruit. How many differentBlizzards can be made if green tea flavor (i.e one type ofice-cream) or mango (i.e on type of fruit) or both green tea flavorand mango must be served for the Blizzard?*

A

80

B

None of the above

C

110

D

100

b.

Assume that Y1, Y2, and Y3 are random variables, with E(Y1) = 2,E(Y2) = -1, E(Y3) =4, V(Y1) = 4, V(Y2) = 6, V(Y3) = 8, Cov(Y1Y2) =1, Cov(Y1Y3) = -1, Cov(Y2,Y3) = 0. Find V(3Yi + 4Y2 - 6Y3 +2).*

A

None of the above

B

520

C

510

D

410

E

480