You flip 11 fair coins. Amazingly, the first 10 flips all comes up heads. What is the probability that the final flip will be a head too?
A. 2^11
B. 0
C. 1/2
D. 1/2^11
E. 1/11

Question

jamesj · Answer

What do you think the answer is?

anonymous · Answer

is it e?(:

jamesj · Answer

I'll give you a hint:  I flip 10 coins in the room next door, they all come up heads.  But I don't tell you.  Now you flip the 11th coin.  What's the probability it comes up heads?

jamesj · Answer

btw, e is not the answer.

others: please don't give the answer yet.

hero · Answer

You assume we know the answer

anonymous · Answer

1/2?:D

ragingsquirrel · Answer

well... i messed it up.

jamesj · Answer

yes.  it's 1/2.  

When you flip the coin an 11th time it doesn't "know" what happen the first 10 times, so it does what it does.  And there's a 50% probability it lands heads or tails.

ragingsquirrel · Answer

doesnt matter how many you flip.

anonymous · Answer

hehehe i get it now :D thank youuu xD im taking a online class for alg2 cuz i failed it :(

anonymous · Answer

.5

ragingsquirrel · Answer

yeah.. i know what you mean. I just messed up my geography quiz online pretty bad.

anonymous · Answer

really? how? is it hard?

ragingsquirrel · Answer

i just dont find it easy to remember all that stuff about states and stuff on top of all the math and other subjects. either that or i really suck at school. probably both

anonymous · Answer

what grade are you in? & dont say thattt you can succeed in school(: just try hardeer and believe in yourself!