PLZZ HELP! I will mark brainliest

Acoin is tossed twice. let e e be the event "the first toss shows heads" and f f the event "the second toss shows heads". (a) are the events e e and f f independent? input yes or no here: yes (b) find the probability of showing heads on both toss. input your answer here: preview

Which of the following is most likely the next step in the series? a3z, b6y, c9x, d12w, е15v, f18u

Can someone me with the property questions for 12 13 and 14 plz