How many groups of 1/2 days are in 1 week? Select a multiplication equation and a division equation to represent the question.

select the correct answers:
7*?=1/2 / 1/2*7=? / ?*1/2=7 and 1/2/7=? / 7/1/2=? / ?/1/2=7

F. a fair coin is thrown in the air four times. if the coin lands with the head up on the first three tosses, what is the probability that the coin will land with the head up on the fourth toss? a. 0 b. 1/16 c. 1/8 d. 1/2