Question

Three boxes B1, B2, B3 contain red and green balls in the ratio 1:1, 3:5, and 5:3 respectively. A box is selected at random and a ball is drawn. What is the probability that the selected ball is red?

A 1/4
B 1/8
C 1/16
D 1/2
Practice Next

Relevant for Exams:

Hey! Ask a query