Aptitude - Arithmetical Ability

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43.

(e)If four marbles are picked at random, what is the probability that one is Green, two are Blue and one is Red?                         
A. 24/455 B. 13/35
C. 11/15 D. 7/91



44.

A bag contains 6 black and 8 white balls. One ball is drawn at random. What is the probability that the ball drawn is white?                         
A. 3/4 B. 4/7
C. 1/8 D. 3/7



45.

A bag contains 3 Red balls, 5 Blue balls and 6 Green balls.(a) If three balls are randomly drawn from the bag, then what is the probability that all are Blue coloured ?                         
A. 3/18 B. 5/182
C. 25/182 D. 1/4




46.

(b) If three balls are randomly drawn from the bag, then what is the probability that 2 are Green and 1 is Red.                         
A. 54/364 B. 25/182
C. 15/364 D. 45/364



47.

(c) If two balls are randomly drawn from the bag, then what is the probability that either both are Red or Blue ?                         
A. 13/18 B. 25/91
C. 30/91 D. 31/91



48.

(d) If three balls are randomly drawn from the bag, then what is the probability that atmost 2 are Green.                         
A. 5/91 B. 86/91
C. 25/51 D. 5/24



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