Related Questions

A bag contains 6 red balls, 11 yellow balls and 5 pink balls. If two balls are drawn at random from the bag one after another, what is the probability that the first ball is red and the second ball is yellow?
A 1/14
B 2/7
C 5/7
D 3/14
একটি থলেতে 4 টি সাদা এবং 2 টি কালো বল আছে। অপর একটি থলেতে 3 টি সাদা ও 5 টি কালো বল আছে। যদি প্রত্যেক থলে হতে একটি করে বল উত্তোলন করা হয়, তবে বলদ্বয় সাদা হওয়ার সম্ভাবনা কত? (A bag contains 4 white and 2 black balls. Another bag contains 3 white and 5 black balls. If one ball is drawn from each bag, what is the probability that both balls are white?)
A 4/6
B 3/8
C 1/4
D 3/4
A bag contains 2 white balls, 3 black balls and 4 red balls. In how many ways can 3 balls be drawn from the bag; If at least one ball is to be included in the draw?
A 64
B 32
C 128
D 256
A bag contains five red balls, twelve blue balls and eight green balls. If one ball is drawn from the bag what is the probability that the ball will not be green?
A 1725
B     825
C    125
D 18
A bag contains 26 purple jellybeans, 15 green jellybeans, and 9 yellow jellybeans; these jellybeans are the only items in the bag. If a person peaches into the bag and picks out only purple jellybeans, how many jellybeans would the person have to pick out in order to double the probability that a jellybean picked out of the bag at random would be a green jellybean?
A 5
B 25
C 21
D 15
A bag contains 2 red, 3 green and 2 blue balls .Two balls are drawn at random. What is the probability that none of the balls drawn is blue?
A 5/7
B 2/7
C 10/21
D 11/21
A bag contains five white and four red balls. Two balls are picked at random from the bag. What is the probability that they both are different color?
A $$\frac{{4}}{{9}}$$
B $$\frac{{5}}{{9}}$$
C $$\frac{{7}}{{9}}$$
D $$\frac{{8}}{{9}}$$
The ratio of the number of red balls , to yellow balls , to green balls in an urn is 2 : 3 : 4 . What is the probability that a ball chosen at random from the urn is a red ball ?
A 2/7
B 510
C 5/9
D 2/9
A box contains 2 white balls, 3 black balls and 4 red balls. In how many ways can 3 balls be drawn from the box, if at least one black ball is to be included in the draw?
A 32
B 48
C 64
D 96
A bag cotains 4 white, 5 red and 6 blue balls. Three balls are drawn at random from the bag. The probability that all of them are red, is -
A 1/22
B 2/91
C 3/22
D 2/77

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