Three friends go for coffee together every week. they have a tradition that one of them pays for all, based on the following game. they each flip a coin. if two coins match but not all three, then the odd person out pays. if the three coins match, then they flip again (and continue until they all match). on average, how many times do they need to flip before they know who pays?

3 times

Step-by-step explanation:

The total number of flips for each round is;

First flip + Second flip + Third flip = 3 flips

Average = [ext]Number of flips/Round[/ext]

Average = 3/1

Average = 3 times.

Check:

Suppose they all match at First and Second rounds,

Average = [ext]3 * 3 / 3[/ext]

Therefore, average = 9/3

Average = 3 times

in the math equation 8 x 7 = 56, the 8 and the 7 are both factors of 56, since in this lesson we will use square tiles to figure out the factors of a whole find as many different arrays as you can, but follow one important rule: all the rows must have the i can make two rows of nine, so 2 and 9 are both factors of 18.

step-by-step explanation: