Posted by **betty** on Monday, March 9, 2009 at 11:59pm.

A fair coin is tossed 4 times. Given that each of the first 3 tosses land tails up, what is the probability that all 4 tosses land tails up?

- algebra 2 -
**Lili**, Tuesday, March 10, 2009 at 12:04am
i think ...

isn't it

3/4?

- algebra 2 -
**drwls**, Tuesday, March 10, 2009 at 12:05am
1/2.. Same as a single coin toss. The odds of each toss are independent of what went before.

- algebra 2 -
**Lili**, Tuesday, March 10, 2009 at 12:06am
oh yeah duh haha

it doesn't matter what was before there're two choices haha i remember now :]

hey answer my question!!

- algebra 2 -
**drwls**, Tuesday, March 10, 2009 at 4:19am
I did answer your question

## Answer this Question

## Related Questions

- algebra - Jamil tosses a coin 3 times. What is the probability that the coin ...
- Probability - A fair coin is tossed repeatedly and independently. We want to ...
- Probalility - A fair coin is tossed repeatedly and independently. We want to ...
- statistic - A coin is tossed 6 times. Find the probability that all 6 tosses are...
- math - a fair coin is tossed in the air 4 times. if the coin lands heads up the ...
- Algebra 2 - A coin is tossed three times. Find the probability of each event. a...
- Algebra 2 - A coin is tossed three times. Find the probability of each event. a...
- Math - Victoria tossed a coin 30 times and got 17 heads. What is the ratio of ...
- Math Problem ( 6th grade math) - Brandon tosses a coin 500 times. The coin lands...
- common fraction - Sara tossed a fair coin five times, and Kaleb tossed a fair ...

More Related Questions