The cost of 2 magnets is 1$. The cost of 9 magnets is $3
The cost of 10 magnets is $3
The cost of 4 magnets is $2
The cost of 6 magnets is $2
The cost of 3 magnets is $1

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