The store has 11 vehicles of a certain brand. C

The store has 11 vehicles of a certain brand. Among them - 6 black 3 - 2 gray and white. Representatives of the firm appealed to the store to offer to sell them three cars of this brand, no matter what color.

a) Make a number of distributions of the number of cars sold in black, provided that the vehicles were selected randomly, and plot;

b) Find the numerical characteristics of the distribution;

c) Write a function of the probability distribution and construct its graph;

d) What is the probability that among the company car will be sold at least 2 car black?