Hello, JoanF!

There are possible seatings.4 friends go to the cinema and reserve 4 tickets.

The seats are already assigned to them.

When they arrive to the cinema, they sit at random.

The probability that one is in the right seat is:

. . (1) greater than

. . (2) less than

. . (3) equal to

the probability that two are in the right seats?

Suppose the four friends are: .

. . and their assigned seats are in this order: .

One in the right seat.

There are 4 choices for the One.

. . Suppose it is

Then there are 2 ways for the others to sit in the wrong seats:

. .

Hence, there are: . ways.

. .

Two in the right seats.

There are: . choices for the Two.

. . Suppose they are and

Then there is 1 way for the other two to be in the wrong seats:

. .

Hence, there are: . ways.

. .

Therefore: .