An urn contains 10 red and 8 white balls. One ball is drawn at random. The probability that the ball drawn is white is

- a)1/9
- b)2/9
- c)5/9
- d)4/9

Correct answer is option 'D'. Can you explain this answer?

Related Test: Test: Problems On Empirical Probability

9 Answers

Narinder Kaur
answered
May 17, 2020

Probability that the ball drawn is white = Number of white balls/Total number of balls

= 8/18

= 4/9

= 8/18

= 4/9

Ajay Mohta
answered
May 31, 2020

As we know:

10 red

8white

so total balls:

10+8=18

probability of white balls: white balls/ Total balls = 8/18

= 4/9

I hope you understood.

10 red

8white

so total balls:

10+8=18

probability of white balls: white balls/ Total balls = 8/18

= 4/9

I hope you understood.

Shagun Bhatia
answered
May 18, 2020

Probability is

No. of desired outcome/No. of total outcomes

In this case it will be 8/18

When we reduce it to lowest form it becomes 4/9 (as 2 is a factor of both 8 and 18)

So the correct option is

D) 4/9

No. of desired outcome/No. of total outcomes

In this case it will be 8/18

When we reduce it to lowest form it becomes 4/9 (as 2 is a factor of both 8 and 18)

So the correct option is

D) 4/9

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