# The Expected number of tosses to get N heads in a row

• February 3rd 2013, 12:38 PM
broccoli7
The Expected number of tosses to get N heads in a row
You have a fair unbiased coin. How many times on average do you need to toss it to get n heads in a row.

Spoiler : Probability Puzzles: Getting Heads in a Row
• February 3rd 2013, 02:45 PM
chiro
Re: The Expected number of tosses to get N heads in a row
Hey broccoli7.

Hint: The probability for n heads in a row will be 1/2^n. Think about the inverse of the probability and what it means frequency wise.