A bag contains 7 red and 4 black balls, 3balls are drwan at random. Find the probability that (1) all are red (2) one red and 2 black.

A bag contains 7 red and 4 black balls, 3balls are drwan at random. Find the probability that (1) all are red (2) one red and 2 black.

Matching exercise

Match the items on the right to the items on the left.

Step 1

Step 2

Step 3

Step 4

screenshot12.1_7_4.png

screenshot12.1_7_3.png

screenshot12.1_7_1.png

screenshot12.1_7_2.png