Pls anyone I need answer of this urgent PLEASE pls anyone this is really important

Suppose i flip two identical coins. what is the probability that i get one head and one tail?

Atheater wants to build movable steps that they can use to go on and off the stage. they want the steps to have enough space inside so they can also be used to store props. how much space is inside the steps?

Select the number of ways in which a line and a circle can intersect