This answer would be (-14).
So basically, you subtract (2677-285 = 2392) then you divide by 2 (2392/2=1196) so Ricky has 1196 and Pedro has 1481
There are alot it depeneds of what is the number :)
The probability would be 0.01458.
This is a binomial probability, since the probabilities are independent, there is a fixed number of trials, and there are two outcomes (either a 0 or not a 0). We use the formula:
The probability of any of the digits being drawn is 1/10. Then we have: