1/4 the probability of the 1st coin is 1/2 for landing on tails and for the second coin, the probability is 1/2 for it not to land on tails so u do 1/2* 1/2 and u get 1/4
It would be 1/2 because there are 4 different possibilities of the two coins landing and exactly 2 of them have exactly only one side up thus concluding in the answer being 50%.
