Abag has 1 red marble, 4 blue marbles, and 3 green marbles. peter draws a marble randomly from the bag, replaces it, and then draws another marble randomly. what is the probability of drawing 2 blue marbles in a row? explain your answer.

Step-by-step explanation:

It is given that a bag has 1 red marble, 4 blue marbles, and 3 green marbles.

Total number of marbles in the bag = 1 + 4 + 3 = 8

Let A be the event of getting blue marble.

Probability of getting blue marble is

Peter replaces first marble, and then draws another marble randomly. So, the events of drawing any marble is independent of other events.

The probability of getting second blue marble is 1/2.

The probability of drawing 2 blue marbles in a row is

Therefore, the probability of drawing 2 blue marbles in a row is 1/4.

step-by-step explanation:

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step-by-step explanation: