Question

how many ways are there to enter the school and reach on the first floor from ground floor , if there are 2 entry doors and 3 staircases ? LIST THE SAMPLE SPACE
( WITH FULL PROCESS PLEASE).​

Answer 1

Let the doors be named A and B

Let the stairs be named 1, 2, 3

[NOTE: A3 means person goes through door A and takes the 3rd stairs]

The sample space, S = {A1, A2, A3, B1, B2, B3}

HOPE THIS HELPS!!

Answer 2

Answer:

{(1d,1s), (1d,2s), (1d,3s), (2d,1s), (2d,3s), (2d, 3s)}