Probability of At Least 1 Heads in 5 Coins Toss

[Jfontenot06]

If you have five coins and you flip them what is the probability that at least one coin falls heads?

 

[siddharth]

Well, what are your thoughts about the problem? Do you have any idea on how you can solve this? You need to show your work before you get help.

 

[mathman]

Hint: prob at least 1 head = 1 - prob no heads. Try working from there.

 

[Jfontenot06]

Well what I was thinking is that the chances of a coin landing on heads is 1/2. Since there are five coins it should be (1/2)^5 = 1/32

 

[mattmns]

That would be the probability of all 5 coins landing on heads.

Look back at mathman's hint again, that is where you want to go with the problem.

 

[DaveC426913]

Same hint, different angle:

What are the chances of throwing a set and having NONE turn up heads?

 

[jimmydelgado777]

For one coin: 3 tosses

2 x 2 x 2

1st toss = happens 2 ways
2nd toss = happens 2 ways
3rd toss = happens 2 ways

s = { HHH, HHT, HTH, THH, HTT, THT, TTH, TTT}

Feel free to correct this. Cheers