Question

A bag contains 2 blue marbles and 5 red marbles.
Consider drawing marbles (no replacement). Find the probability of drawing:

a. a red marble first and then a blue marble second
b. a blue marble second given that a red marble drawn first

Answer 1

A) 5/7 * 2/6 = 10/42 = 5/21

b) bukanya sama dg soal a ? copy vaste jawaban di a :)