Math Question - Probability Question

Question

A box contains 4 jellies, 6 blue jellies and 5 yellow jellies. What is the probability that a jelly chosen randomly from the box is not red? Leave answer as fraction.

Answer 1

in total, there are 4 + 6 + 5 = 15 jellies, of which 6 + 5 = 11 are not-red

meaning the probability here is

probability(not red) = number of non-red jellies / total number of jellies = 11/15

Answer 2

4 is missing the color. It must be red then?

Probability = number of jellies that aren't red/total number of jellies

Probability = (6+5)/(4+6+5) = 11/15