Answer:
7/15
Explanation:
Probability of an event is the number of possible outcome divided by the total outcome. It is a ratio. The probability that an event will or will not happen is 1 as those are the only two possibilities.
Given that the flower shop has 11 red roses, 7 pink roses, 9 white he roses , and 3 yellow roses in stock , the total number of flower available
= 11 + 7 + 9 + 3
= 30 flowers
The probability that a rose selected is ;
red = 11/30
yellow = 3/30
the probability they the selected rose is red or yellow
= 11/30 + 3/30
= 14/30
= 7/15