# what is the probability of toss a coin 5 times and each time getting heads.

need more explaination!

- Asked By petitpapa
- Asked on October 24, 2010

need more explaination!

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1

## Answers

Toss it once and the probability is 1/2. Toss it again and it’s 1/4. A third time is 1/8. You can see this is true by drawing a diagram that illustrates all the options that could happen:

[img_assist|nid=200275|title=Coin Toss Probabilities|desc=|link=none|align=left|width=250|height=97]

From this you can see there is a pattern

1/2 x 1/2 = 1/4

1/4 x 1/2 = 1/8

The formula is 1/(2^n), with n being the number of times the coin is flipped. Therefore the probability of all heads 5 times in a row is 1/32