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January 29, 2015

January 29, 2015

Posted by **Joanne** on Thursday, February 7, 2008 at 5:43pm.

-Write an expression to represent the probability of tossing a coin 'n' times and getting 'n' heads.

-Express your answer to the question above as a power of 2.

At first I thought the expression was (1/2)^n but then when I look at it again, it seems wrong.

- algebra I -
**DanH**, Thursday, February 7, 2008 at 5:59pmIt is right!!

- algebra I -
**Joanne**, Thursday, February 7, 2008 at 6:17pmOh okay. Then for the second problem, would it be (1/2)^2?

- algebra I -
**DanH**, Thursday, February 7, 2008 at 6:46pmI am sorry, but the second part of the problem "express your answer to the question as power of 2" is confusing to me. Certainly, if you flip the coin TWICE, then it's a power of 2, as you said, but if you flip it N times, I don't know you can express this as a power of 2.

- algebra I -
**Joanne**, Thursday, February 7, 2008 at 6:56pmthey mean that n= n number of times in the equations

(1/2)^n

but the product is not corresct if u replce an exponent of 2 for the n...

the answer is said to be 2^-n

- algebra I -
**DanH**, Thursday, February 7, 2008 at 7:12pmOh...ok, of course...

2^-n is the same as (1/2)^n.

- algebra I -

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