Help me please i need to finish this today

Astandard deck of cards contains 52 cards. one card is selected from the deck. (a) compute the probability of randomly selecting a seven or king. (b) compute the probability of randomly selecting a seven or king or jack. (c) compute the probability of randomly selecting a queen or spade.

What kind of bond pays interest which is exempt from tax?

Find the values of y: 3y^3(y^2+ 2/3y)=0