A coin is weighted in such a way that it lands "heads side up" 70% of the time. The coin is to be flipped until there are exactly 5 flips that land "heads side up". What is the probability that the 5th "heads side up" occurs on the 8th toss?

What is the probability that when three coins are flipped, two lands heads? Type your answer as a fraction

Raffle tickets numbered consecutively from 101 through 350 are placed in a box. What is the probability that a ticket selected at random will have a number with a hundreds digit of 2 ?

A fair coin is flipped 6 times. Find the probability that heads was flipped exactly 4 times.

Jason flips a coin and it lands on head.  He flips the coin again.  What is the probability that it will land on heads?

A coin is tossed 6 times. What is the probability of the first two tosses being tails or the first three tosses are heads?

Amy tosses a fair seven sided die 5 times. What is the probability she rolls at least 1 four?

you pick three cards from a deck replacing the card each time before picking the next card. What is the probability that all three cards are jacks?

Joe tosses a fair three-sided die 9 times. What is the probability he rolls all threes? If necessary, round to 4 decimal places.

A fair coin is flipped 4 times. Find the probability that heads was flipped exactly 2 times.