Question

Tick the correct answer.
1. A bag contains 3 white and 2 red balls. One ball is drawn at random. What is the probability
that the ball drawn is red ?
(a) 1/2
(b) 2/3
(c) 1/5
(d) 2/5​

Answer 1

Answer:

A second bag contains 2 red and 4 black balls. If one bag is selected at random and a ball is drawn from it,find probability that the ball is red. My attempt:- P(Red ball from bag 1)=4/7 P(Red ball from bag 2)=2/6 P(Selecting one bag from 2 bags)=1/2. So,P(Red ball from bag 1 U Red ball from bag 2) =4/7+2/6=38/42.

Answer 2

Answer:

correct answer is:-(D) 2/5