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The mean is 7.
I do not mean anything since I do not list those numbers in that sequence.
What you are trying to find is the average or mean. You find this by adding all the numbers in a set together and divide by the amount of numbers you added. Example: 1, 1, 2, 2, 3, 3. Find the average (mean). Add all the numbers in the set together: 1 + 1 + 2 + 2 + 3 + 3 = 12 Divide by the amount of numbers you added: You added together 6 numbers: 12 ÷ 6 = 2. Mean of {1, 1, 2, 2, 3, 3} = 2.
Prime numbers from 1 to 12: 2, 3, 5, 7, 11Composite numbers from 1 to 12: 4, 6, 8, 9. 10. 12
Well, if you really mean divisible by 4 then the answer is 100% that is probability 1.00. On the other hand, if you mean evenly divisible by 4, then in the numbers 1-12 there are 3 numbers evenly divisible by 4 (4, 8, 12) since there are 12 numbers then the probaqbility of a number divisible by 4 is 3/12 = 0.25