A double decker minibus has 8 seats in the lower deck and 10 seats in the upper deck. Find the number of ways of arranging 18 persons in the bus if 3 children want to go to the upper deck and 4 old people can not go to the upper deck.

A double decker minibus has 13 seats in the lower deck and 12 seats in the upper deck. In how many ways can a marriage party of 25 persons be arranged if 4 old people refuse to go to the upper deck and 3 children wish to travel only in the upper deck.

A double decker bus has 15 seats in the lower deck and 13 seats in the upper deck. In how many ways can a marriage party of 28 persons be arranged if 4 old people refuse to go to the upper deck and 4 children wish to travel in the upper deck only.

Passengers are to travel by a double decked bus which can accommodate 13 in the upper deck and 7 in the lower deck. Find the number of ways that they can be distributed if 5 refuse to sit in the upper deck and 8 refuse to sit in the lower deck.

Passengers are to travel by a double decked bus which can accommodate 13 in the upper deck and 7 in the lower deck. Find the number of ways that they can be distributed if 5 refuse to sit in the upper deck and 8 refuse to sit in the lower deck.

Passengers are to travel by a double decked bus which can accommodate 13 in the upper deck and 7 in the lower deck. Find the number of ways that they can be distributed if 5 refuse to sit in the upper deck and 8 refuse to sit in the lower deck.

Passengers are to travel by a double decked bus which can accommodate 13 in the upper deck and 7 in the lower deck.Find the number of ways that they can be distributed if 5 refuse to sit in the upper deck and 8refuse to sit in the lower deck.

Passengers are to travel by a double decked bus which can accommodate 13 in the upper deck and 7 in the lower deck.The number of ways that they can be divided if 5 refuse to sit in the upper deck and 8refuse to sit in the lower deck,is

A double -decker bus has 5 empty seats in the upper deck and 5 empty seats in the lower deck. 10 people board the bus of which 2 are old people and 3 are children. The children refuse to take seats lower deck while old people insist to stay lower deck. How many different sitting arrangements of the people are possible ?

A double -decker bus has 5 empty seats in the upper deck and 5 empty seats in the lower deck. 10 people board the bus of which 2 are old people and 3 are children. The children refuse to take seats lower deck while old people insist to stay lower deck. How many different sitting arrangements of the people are possible ?