Question

A basket contains 7 red balls, 3 green balls and 5 yellow 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. ​

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Answer 1

Answer:

7/15 red balls

5/20 blue balls

Step-by-step explanation:

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Answer 2

Answer:

5/17

Step-by-step explanation:

Total no. of balls = 7+3+5= 15

after adding two blue Balls= 15+2= 17

Red Balls= 7 but 3 are painted blue, then

red balls= 7-3= 4

Probability= 4/17

total blue Balls=2+3= 5

Probability=5/17