What is the probability of rolling a 5 or not rolling a 5 using a regular 6-sided number cube?

Which of those sequences is a geometric sequence

Determine the mean and variance of the random variable with the following probability mass function. f(x)=( 729divided by 91) (1 divided by 9) superscript x baseline comma x equals 1,2,3 round your answers to three decimal places (e.g. 98.765).

The owner of the plant nursery where you were tells you to fill 350 ml bottles from a 30 l from a fertilizer