Saturday

January 31, 2015

January 31, 2015

Posted by **Patrick** on Wednesday, June 10, 2009 at 5:36pm.

ANSWER: 5:8?

Three Coins are tossed. Find the probability that exactly 2 coins show heads if the first coin shows heads.?

ANSWERS: Could it be 1/4?

- Advanced Math -
**PsyDAG**, Thursday, June 11, 2009 at 12:21pmThe first answer is correct.

For the second, once you have the first head there are four possibilities for the other two coins:

HH

TT

TH

HT

They must show one head for there to be two heads. What proportion do you find?

I hope this helps. Thanks for asking.

- Advanced Math -
**Anonymous**, Wednesday, July 25, 2012 at 5:50pm5:8

**Answer this Question**

**Related Questions**

Math - While cleaning her dorm room, Monica mistakenly pushed three coins off ...

math answer check - Three coins are tossed, and the number of heads observed is ...

Probability - Four Coins are tossed. Describe the sample space S, probability of...

Probability - Four coins are tossed. What is the probability of getting more ...

stat - Three coins are tossed, and the number of heads observed is recorded. (...

Geometry - Robert says that if you toss three coins you get 3H (#Heads), 2H (2 ...

Math - "The probability of getting heads on a biased coin is 1/3. Sammy tosses ...

math - flip a coin 3 times a) what are the odds in favor of getting exactly 2 ...

math - flip a coin 3 times a) what are the odds in favor of getting exactly 2 ...

Geometry - Robert says that if you toss three coins you get 3 H (3 Heads),2 H ( ...