There are 3 red marbles and 2 blue marbles placed in a box. Stan randomly picks a marble from the box and records the color. He does replace the marble before picking the second marble. What is the probability that both the marbles he picks are blue.

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step-by-step explanation:

the simplified form is

step-by-step explanation:

we want to simplify the expression,

let us change the middle bar to a normal division sign to obtain,

we multiply the first fraction by the reciprocal of the second fraction to obtain,

we factor to obtain,

we cancel the common factors to get,

we simplify to get,

the correct answer is b