Question

A bag contains 10 red marbles, 10 white marbles, and 10 blue marbles. a. What is the minimum no. of marbles you have to choose randomly from the bag to ensure that we get 4 marbles of same color?

b.How many marbles must you select to be sure of getting at least 3 blue marbles?

Answer 1

A 10 marbles Answer Explanation: It is possible that we get 3 marbles each of colors red, white and blue marbles. so we have a marbles (3 marbles of each cobo) & The 18th marble will ensure that we have u marbles of same color > 10 marbles Answer ② 23 marbles Answer Explanation. It is possible that we have 22 marbles having lo red, lo white and 2 blue marbles) the good marble will make god blue marble. & Answer= 23 marbles