You roll a pair of fair dice. how likely is it that the number on each die is a whole number

The random variable x is the number of occurrences of an event over an interval of ten minutes. it can be assumed that the probability of an occurrence is the same in any two-time periods of an equal length. it is known that the mean number of occurrences in ten minutes is 5.3. the appropriate probability distribution for the random variable

How to find the exponential function y=ca^x, with points (1,2) and (2,1)

Use sigma notation to represent the following series for 9 terms.