Two marbles are drawn without replacement from a box with 3 white, 2 green, 2 red, and 1 blue marble. Find the probability.
-Both marbles are red.
A) $\frac { 1 } { 28 }$
B) $\frac { 3 } { 56 }$
C) $\frac { 1 } { 16 }$
D) $\frac { 1 } { 4 }$

Question

Two marbles are drawn without replacement from a box with 3 white, 2 green, 2 red, and 1 blue marble. Find the probability.
-Both marbles are red. 
A) $\frac { 1 } { 28 }$
B) $\frac { 3 } { 56 }$
C) $\frac { 1 } { 16 }$
D) $\frac { 1 } { 4 }$

Quizplus · Accepted Answer

The probability of drawing a red marble on the first draw is 2/8. The probability of drawing a red marble on the second draw is 1/7. The probability of drawing both marbles red is (2/8) * (1/7) = 1/28.

Two Marbles Are Drawn Without Replacement from a Box with 3