SOLUTION: If you are rolling a die and counting aces (an ace on a die is a 1), how many times should you roll the die in order to have a better than 80% chance of getting at least one ace?

SOLUTION: If you are rolling a die and counting aces (an ace on a die is a 1), how many times should you roll the die in order to have a better than 80% chance of getting at least one ace?

Algebra.Com

Question 289840: If you are rolling a die and counting aces (an ace on a die is a 1), how many times should you roll the die in order to have a better than 80% chance of getting at least one ace?
Answer by richwmiller(17219) (Show Source): You can put this solution on YOUR website!
80%=4/5
4/5=x/6
24=5x
24/5=x
4.8=x
so you need to roll the die at least 5 times for a better than 80% chance of rolling an ace.
each roll is 1/6 chance
x/6>4/5
RELATED QUESTIONS
if you roll two fair dice(one black die and one white die) in how many ways can you obain (answered by ikleyn,richwmiller)

If you are rolling a fair die, what is the probability of rolling an even number and... (answered by venugopalramana)

If you roll two fair dice (one black die and one white die), in how many ways can... (answered by ikleyn)

Suppose that you are performing the probability experiment of rolling one fair six-sided... (answered by ikleyn,greenestamps)

If we roll a die two times, determine whether the following pairs of events are... (answered by ikleyn)

A game of chance involves rolling an unevenly balanced 4-sided die. The probability that (answered by robertb)

Calculate the probability for the following situation, then select the correct answer: (answered by greenestamps)

You draw a card from a standard deck of 52 cards, then roll a 6-sided die. 1. What is... (answered by Boreal)

You are tossing a coin, then rolling a die, then drawing a card from a deck of cards.... (answered by stanbon)