Matching Type : Choose the appropriate formula in Column B that will get the permutation of the given problem at Column A . Write the chosen letter on a separate sheet of paper .

1. The available parking space in a mall is 10, in how many ways can the first 5 cars be parked on the said parking area?

2. How many ways you can buy 4 green balls, 5 yellow balls and 6 orange balls?

Note: Balls of the same color look identical.

3. In how many ways can 15 people occupy the 15 seats in a front row of a cinema?

4. Count how many 'stair-case' path are there from the origin to the point (6,4).

5. A circular string necklace with several beads on it. How many different necklace designs can be made if there are 15 different beads to be used?

ps : answer with solution !! ​