A van has 8 seats. It has two seats in the froot with two row of three seats behind. The van belongs to a family, consisting of seven members, `F,M,S_(1),S_(2),S_(3),D_(1),D_(2).` How many ways can the family sit in the van if
i. Ther are no restriction?
ii. Either F or M drives the van ?
iii. `D_(1),D_(2)` sits next to a window and is driving ?

Answer

(i) 35280
(ii) 10080
(iii) 2400