The diagram shows the contents of a jar of marbles. you select two marbles at random. one marble is drawn and not replaced. then a second marble is drawn. what is the probability of selecting a red marble and then another red marble? a) 3/64 b) 1)4 c) 1/20 d) 1/30 ( there are 7 blue marbles, 5 green marbles, and 4 red marbles)

Option C is the answer.

Step-by-step explanation:

There are some marbles in a jar

Blue -  7  marbles

Green -  5 marbles

Red  - 4 marbles

Total = 16 marbles

You selected two marbles at random without replacing any.

So the probability that first marble drawn is red =

Now without replacing you selected another marble, So the probability that second marble is red =

=

=  

P = × =

The probability of selecting a red marble and then another red marble is

.

Option C is the answer.

add an image

step-by-step explanation:

36 is the final answer! : )