A card is drawn from a well-shuffled deck of playing cards. Find the probability of drawing a black card which is neither a face card nor an ace?
Answer: C
In each suit, there are 9 cards that are not face cards and ace.
Hence, there will be a total of 18 cards in a deck which are black and are not face cards and ace.
We know that, Probability of an event E, P (E) =number of favourable outcomes/total number of outcomes
Required probability is 18/52 = 9/26.
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In a drawer there are 4 white socks, 3 blue socks and 5 grey socks. Two socks are picked randomly. What is the possibility that both the socks are of same color?
Answer: D
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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?
Answer: B
Let number of balls = (6 + 8) = 14.
Number of white balls = 8.
P (drawing a white ball) = 8/14 = 4/7.
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If a number is chosen at random from the set {1, 2, 3, ...., 100}, then the probability that the chosen number is a perfect cube is -.
Answer: A
We have 1, 8, 27 and 64 as perfect cubes from 1 to 100.
Thus, the probability of picking a perfect cube is
4/100 = 1/25.
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If a card is chosen from a standard deck of cards, what is the probability of getting a diamond (♦) or a club(♣)?
Answer: A
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