Latest IBM Aptitude Question SOLUTION: A jar contains 2 red, 3 blue, and 4 green marbles. Niki draws one marble from the jar, and then Tom draws a marble. What is the probability that Niki will draw a green marble and T

• Placement Papers
• /
• IBM
• /
• Numerical Ability
• /
• Probability

IBM Question Papers: IBM Interview Experience(49) IBM Company Profile

(#M40005583) IBM Numerical Ability question Probability Keep an EYE

A jar contains 2 red, 3 blue, and 4 green marbles. Niki draws one marble from the jar, and then Tom draws a marble. What is the probability that Niki will draw a green marble and Tom will draw a blue marble?

Asked In IBM (12 years ago)

Unsolved Read Solution (6)

Is this Puzzle helpful?   (9)   (3) Submit Your Solution Probability

Read Solution (6) :

pratik kumar  (12 years ago)

4/9 * 3/8 = 1/6

Is this solution Helpfull? Yes (41) | No (4)  

ritwick  (11 years ago)

the case iz not mention here...tat wether tom is drawing the marble after niki or..or both are drawing at the same tym or tom iz drawing before niki or...whether niki iz placing the marble back into the jar when tom is drawing another marble..different diffrnt answr will come for diffrnt situatn.

Is this solution Helpfull? Yes (4) | No (8)  

Rahul KUmar  (7 years ago)

2 R, 3 B, 4 G, => 9 total
Probability that Nikki picks green = 4/9.

Now, 2 R, 3 B, 3 G => 8 total
Probability that Tom picks blue = 3/8

Probability that Mary picks a blue=1/7.
Both together, multiply the probabilities.

probability that Niki will draw a green marble and Tom will draw a blue marble = ( 4/9 ) * ( 3/8 ) = 1/6

Is this solution Helpfull? Yes (4) | No   

sorapalli sri harish  (9 years ago)

(4c1)/(9c4)*(3c1)/(8c3) is the correct

Is this solution Helpfull? Yes (3) | No (1)  

y.vishnupriya  (9 years ago)

(4c1/9c1)*(3c1/8c1)

Is this solution Helpfull? Yes (2) | No   

uthra murugesan  (8 years ago)

Sol: 4/9 * 3/8

Is this solution Helpfull? Yes | No   

Please Login to Read Solution.