Can any one pls help with this Probibality question with formulas?

XYZ Manufacturing has 6 machines that perform a particular task. Breakdowns occur frequently for this machine. Past records indicate that the number of breakdowns that occur each day is described by the following probability distribution:

Number of

Breakdowns------------- Probability

0------------------------------- 0.3

1 -------------------------------0.4

2------------------------------- 0.1

3------------------------------- 0.2

More than 3----------------- 0.0

(a) What is the expected number of breakdowns in any given day?

(b) What is the variance for this distribution?

(c) What is the probability that there will be at least 2 breakdowns in a day?

Can you solve the whole question pls?

Will be highly appreciated