Atrain has 10 cars numbered 1 through 10. if the cars are coupled randomly, what is the probability that the first3 cars are in car number order?

Step-by-step explanation:

If we arrange the first three cars one by one we get -

Selecting the first car out of ten cars

Selecting the second car out of remaining nine cars

Selecting the third car out of remaining eight cars

So, the probability of selecting  three cars back to back without repeating is given by

Probability of Selecting the first car out of ten cars * Probability of Selecting the second car out of  remaining nine cars * Probability of Selecting the third car out of  remaining eight cars

all it means is function 3