Consider a collection of envelopes consisting of 3 red

Last updated: 7/9/2022

Consider a collection of envelopes consisting of 3 red envelopes, 1 blue envelope, 2 green envelopes, and 2 yellow envelopes. If one of the envelopes is selected at random, determine the probability that a red or a blue envelope is selected. The probability of selecting a red or a blue envelope is (Type an integer or a simplified fraction.)