Abag contains 5 red marbles, 3 green marbles, 2 purple marbles, 2 orange marbles, and 1 blue marble.
which color marble is less likely to be picked than purple?
blue
orange
green
red

In total, there are 13 marbles, we know this by adding all the marbles together.

out of 13 marbles here are 2 purple marble, so the probability of purple is: 2/13

the probability of the other colours can be worked out in the same way:
Purple       = 2/13
Blue          = 1/13
Orange     = 2/13
Green       = 3/13
Red          = 5/13

from this, you can identify which is likely