# Probability

## Probability Study Guide: Homework Help

A person rolls a die and picks a card from a deck. What is the probability that the number on the die is even...

The person rolls a die and picks a card from a deck of card. A die has 6 sides with the numbers 1, 2, 3, 4, 5 and 6. A standard deck of cards has 52 cards with four suits, clubs and spades that are black and hearts and diamonds that are red. The probability of any event is the ratio of the number...

Two letters are chosen at random with replacement from the word PROBABILITY. What is the chance that a) they are...

Two letters are chosen at random with replacement from the word PROBABILITY. Note there are 11 letters in total in PROBABILITY. a) P and T each only occur once in the word. The probability of choosing P and T in a particular order (eg P then T) is Pr(PT) = Pr(P) x Pr(T) (as they are...

If a coin is flipped twice, what is the probability of heads on the 2nd flip if the 1st flip was heads?

The probability of a two-sided coin landing head side up is the same each time it is flipped. Since there are only two possible outcomes, heads or tails, there is a 50% probability that the flip will be heads. The fact that the coin landed head side up the first time it was flipped has no bearing...