Question 428662
There are a total of 12 blocks, 6 of which are red.
So the probability of choosing a red block with the first draw is 6/12.
The probability of choosing a red block with the second draw is 5/11, since the 1st was not replaced.
The probability of choosing two reds is the product of the individual probabilities:
P(2 red) = 6/12*5/11 = 1/2*5/11 = 5/22