Aroom contains three urns: u1, u2, u3. u1 contains 3 red and 2 yellow marbles. u2 contains 3 red and 7 yellow marbles. u3 contains 1 red and 4 yellow marbles. 66) referring to urns we enter the room and select an urn, but we are not sure which, and then we randomly remove a marble from the urn. find the probability that the marble is red.

Step-by-step explanation:

Urn U1: 3 red and 2 yellow marbles, in total 5 marbles.

The probability to select red marble is

Urn U2: 3 red and 7 yellow marbles, in total 10 marbles.

The probability to select red marble is

Urn U1: 1 red and 4 yellow marbles, in total 5 marbles.

The probability to select red marble is

The probability to choose each urn is the same and is equal to

Thus, the probability that the marble is red is

answer: answer is c!

ok i got to organize the

3/15 and 12/55

3*

aha

3*4 equals 12 but not

a: no

b:

8/24 12/35

no

gautie

it's c

5/18 = 25/90

5*5=25

18*5 = 90

hope that you!

one more happy customer!

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step-by-step explanation:

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step-by-step explanation: