Question

A basket contains 7red balls, 3green balls and 5yellow balls. What is the probability of obtaining a red ball? If 2 blue balls are added to the basket and 3 red balls are painted blue, find the probability of obtaining a blue ball

Answer 1

Answer:

red balls= 7

green balls = 3

yellow balls = 5

total balls = 15

p(e)= no of red balls /total no of balls

= 7/15

Step-by-step explanation:

blue balls = 2

red balls = 10

total balls = 10+2+3+5=20

p(e) = 2/20= 1/10