Home
Class 12
MATHS
A box contains 4 defective and 6 good bu...

A box contains 4 defective and 6 good bulbs. Two bulbs are drawn at random without replacement. Find the probability that the both the bulbs drawn are good.

Text Solution

Verified by Experts

The correct Answer is:
`(1)/(3)`
Promotional Banner

Similar Questions

Explore conceptually related problems

A box contains 5 black, 4 white and 6 red balls. Two balls are drawn one after another without replacement. What is the probability that the first will be white and the second will be balck ?

(i) An urn contains 7 red and 3 black balls. Two balls are drawn one after another without replacement. What is the probability that the second ball is red if it is know that the first ball drawn is red. (ii) A box contains 8 red and 10 green balls. Two balls are drawn one after another without replacement. What is the probability that the second ball is green if it is know that the first ball drawn is red.

A box contains 19 screws, 3 of which are defective, Two screws are drawn at random with replacement. Find the probability that neither of the two screws is defective.

An urn contains 12 red balls and 12 green balls. Suppose two balls are drawn one after another without replacement . Find the probability that the second ball drawn is green given that the first ball drawn is red.

A bag contains 4 black , 5 white and 6 red balls. If 4 balls are drawn one by one with replacement the probability that none is red is

In a box containing 15 identical bulbs, 5 are defective. If 5 bulbs are drawn at random from the box with replacement, find the probability that (i) none is defective (ii) only one of them is defective (iii) atleast one of them is defective

I: A box contains 20 screws , 5 of which are defective. 2 screws are drawn at random. The probability of event that neither of the two screws is defective is 21//38 . II: A box contains 5 black, 4 white and 6 red balls. 2 balls are drawn without replacement. The probability that the first will be first will be white and the second will be black is 4//21 .

A box contains 4 red and 8 white balls . If 4 balls are drawn one by one with replacement then the probability of getting 3 white balls is