Math and Arithmetic
Statistics
Probability

What is the theoretical probability of rolling sum of 7?

Answer

Wiki User
01/12/2013

-- There are (6 x 6) = 36 possible rolls for a fair pair of 6-sided dice.

-- There are 6 ways to roll a sum of 7 :

  • 1 ... 6
  • 2 ... 5
  • 3 ... 4
  • 4 ... 3
  • 5 ... 2
  • 6 ... 1

-- So the probability is 6/36 = 1/6 = 162/3 % .

-- The probability is the probability, not the 'theoretical' probability.