00:01
In this problem, we are given that in a factory, it was observed that 30 number of products which were produced, they were faultless.
00:12
And 20 number of products, well, they were defective.
00:19
And two pieces are selected randomly, and we are required to find out the probability that both of these selected pieces are faulty.
00:31
So we will consider this as binomial distribution, where the number of trials here is 2, and let's consider the probability of the success as the probability of an item being defective.
00:42
So that would be 20 over 50, which is equal to 2 by 5, and the probability of the failure, well, that would be 1 minus p, which is equal to 3 by 5, and we will consider x here as the random variable, which is representing the number of successes, which means that this is representing the number of items, which are faulted...