Question

Hello can you please help me posted picture of question

Answer 1

I believe it D 
As long as they can repeat can occur and the formula is <span />

Answer 2

Total number of seats = 5
Total number of friends = 5

We want to find in how many ways the 5 friends can sit or be arranged in 5 seats. This can be found using permutations.So we are to find the permutations of 5 objects taken 5 at a time. This can be expressed as 5P5.

5P5 = 120

So, the 5 friends can sit in 120 different ways.

The correct answer is option D