Question

A bag contains 5 yellow marbles, 7 pink marbles, and 3 purple marbles. Gordon selects a marble without looking. What is the probability that he selects a yellow marble or a purple marble? 245 115 715 815

Answer 1

It is an 8/15 probability. there are 15 marbles total (5y+7p+3pl=15) 

5/15y, 7/15p, 3/15.

5/15+3/15= 8/15

Answer 2

→ Chapter : Probability ←
≡ We know that there is:
⇒ 5 yellow marbles
⇒ 7 pink marbles
⇒ 3 purple marbles
∴ Total of the marbles = 5 + 7 + 3 = 15

≡ Solution:
⁵/₁₅ + ³/₁₅ = ⁸/₁₅