Question

If ther at 20 pebbles
2=red
5=blue
7=green
6=yellow
Find the probability of all the colour pebbles

Answer 1

possible outcomes = 20

Favourable outcomes = 20

P(E) getting all colours = Favourable outcomes/Possible outcomes = 20/20 = 1

Answer 2

Probability of red pebbles = 2/20 = 1/10
Probability of blue pebbles = 5/20 = 1/4
Probability of green pebbles = 7/20
Probability of yellow pebbles = 6/20 = 3/10

hope it helps u