There are 5 red marbles, 15 blue marbles, and green marbles in you reach in and randomly draw a
replace it, and draw another what is the probability that the first will be red and the second will be blue?

Step-by-step explanation:

There are 25 marbles altogether.

When you pick the 1st marble, there's a 5/25 chance that you pick a red marble.

When you pick the 2nd marble, there's a 15/24 chance that you pick a blue marble.

Why did it become 24? Because you already pick the 1st marble.

So since each probability is independent from each other, the total probability can be found by multiplying both probabilities, which is 1/8.

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step-by-step explanation:

the number of possible outcomes that do not show a 1 on the first spinner and show the number 4 on the second spinner is 2.

spinner 1 spinner 2

1                     1

1                     2

1                     3

1                     4

2                   1

2                   2

2                   3

2                   4   = not 1, and 4

3                   1

3                   2

3                   3

3                   4 = not 1, and 4

only 2 outcomes have passed the given condition.

step-by-step explanation: