In a standard set of dominoes, a face of each domino has a line through the center, with 0 to 6 dots on each side of the line. Each possible combination of dots is used exactly once, one combination per domino. What is the probability that a randomly selected domino will have the same number of dots on both sides of the line? Express your answer as a common fraction.

Question

I thought the answer was 1/7 did I make a mistake?

Answer 1

7/28 = ?

Answer 2

is 1/4 i dont know how to solve it but i had the same question and my teacher told me it was 1/4

Answer 3

pattern 1/6 and 6/1 is the same domino, so total is 28 dominos.