What is the GCF of 18, 45, 63

Can someone me with #s 8, 9, and 11. with just one of the three also works. prove using only trig identities.

Consider an example of a deck of 52 cards: example set of 52 playing cards: 13 of each suit clubs, diamonds, hearts, and spades ace 2 3 4 5 6 7 8 9 10 jack queen king clubs diamonds hearts spades what is the probability of drawing three queens from a standard deck of cards, given that the first card drawn was a queen? assume that the cards are not replaced.

Look at the chart showing the results of a baseball player at bat. which is the probability of getting a hit?