16. Find the number of ways to choose the vehicle tires

In a car showroom there are 12 different colored vans available. And 7 different variety of wheels are available. The customer are welcomed to choose wheels of the van they like. What is the total number of ways for a person to choose a van?

 

[Note: Front two wheels should be the same typed. Back two wheels should be the same typed.]

 

 

There are 7568953504588 possibilities to choose the van with different tires.