SOLUTION: a bag contains 4 red and 6 green identical balls. if two are drawn together at random from the bag, find the probability that they are of the same colour
Algebra.Com
Question 778589: a bag contains 4 red and 6 green identical balls. if two are drawn together at random from the bag, find the probability that they are of the same colour
Answer by psbhowmick(878) (Show Source): You can put this solution on YOUR website!
Total no. of ways in which 2 balls can be selected out of 10 is 10C2 = 45.
Total number of ways in which 2 red or 2 green balls can be selected is 4C2 + 6C2 = 6 + 15 = 21
So the probability of picking up 2 balls of the same color = 21/45 = 7/15
RELATED QUESTIONS
two balls are drawn at randum from a bag containing 6 red and 4 green balls. find the... (answered by ewatrrr)
a bag contains 6 white,4 red and 4 black balls. find the probability of getting at least... (answered by Boreal)
A bag contains 5 white, 6 red, 2 green and 2 black balls.
Two balls are selected at... (answered by Edwin McCravy)
A bag contains 1 green, 4 red, and 5 yellow balls. Two balls are selected at random.... (answered by stanbon)
A bag contains 14 identical balls 4 of which are red, 5 black and 5 white. Six balls are... (answered by edjones)
A bag contains 5 red balls and 3 blue balls. If two balls are drawn at random without... (answered by ikleyn,greenestamps)
A bag containing 14 identical balls, 4 of which are red, 5 black and 5 white,6 balls are... (answered by ikleyn)
A bag contains three red balls, five white balls and two green balls. If three balls are... (answered by oscargut)
A bag contains five red balls, three white balls and two green balls. If three balls are (answered by stanbon)