Question

John flips 10 coins and lays them out in a straight line.

how many possible combinations of heads and tails and possible?

Answer 1

9

Explanation:

This can be represented by a "T Chart":

Heads | Tails

1------------- 9

2------------ 8

3------------ 7

4------------ 6

5------------ 5

6------------ 4

7------------ 3

8------------ 2

9------------ 1

Hope this helps! :)

Answer 2

I think that it could be 20 because you could have 10 different ones with heads and 10 different combintaions with tails.