SOLUTION: There are 40 pieces of building blocks in a bag: 10 each of blue, green, red, and yellow. Two pieces are chosen at random. Identify the probability that both of the pieces chosen a

Question 1035503: There are 40 pieces of building blocks in a bag: 10 each of blue, green, red, and yellow. Two pieces are chosen at random. Identify the probability that both of the pieces chosen are green.

Answer by rothauserc(4718) (Show Source): You can put this solution on YOUR website!
let P be probability
:
P (first block is green) = 10 / 40 = 1/4
:
P (second block is green) = 9 / 39
:
****************************************************************
P (both blocks are green) = (1/4) * (9/39) = 0.0576923 approx 6%
****************************************************************
:

RELATED QUESTIONS
At a candy store, there are 200 pieces of bubble gum in a bubble gum machine. *... (answered by ewatrrr)

At a candy store, there are 200 pieces of bubble gum in a bubble gum machine. *... (answered by stanbon)

There are 12 balloons in a bag: 3 each of blue, green, red, and yellow. Three balloons (answered by brucewill)

There are four green blocks and four red blocks in a bag. Two blocks are selected at... (answered by stanbon)

A bag contains 12 blocks. Six are red, two are blue, and three are green, and the rest... (answered by htmentor)

According to company reports, the current mix of colors for M&M dark chocolate candies... (answered by edjones)

For a certain candy, 10% of the pieces are yellow, 15% are red, 20% are blue, 15% are... (answered by ewatrrr)

For a certain bag of candy , 15% of the pieces are yellow, 15% are red, 15& are blue and... (answered by reviewermath)

A jar contains balls of four different colors; red, blue, yellow and green. The total... (answered by stanbon)