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Probability 1-2

7Two unbiased dice are thrown simultaneously. What is the probability that the sum of the numbers is 10?
A1/12
B1/14
C1/15
D1/16


8A bag contains 4 blue balls and 5 green balls. A ball is drawn at random. What is the probability that it is blue in colour?
A2/9
B4/9
C5/9
D6/9


9A bag contain 4 green marbles and 5 yellow marbles. Two marbles are drawn at random from the bag. What is the probability that both the balls are of same colour?
A3/9
B5/9
C4/9
D6/9


10If a card is drawn at random from a well shuffled pack of cards, find the probability of drawing a red card?
A5/8
B2/8
C1/2
D4/6


11If a card is drawn at random from a well shuffled pack of cards, find the probability of drawing an honour?
A2/13
B3/13
C7/13
D4/13


12Two numbers are selected at random from the first 25 natural numbers. What is the probability that the sum of two numbers is 14?
A1/50
B2/25
C2/50
D3/50


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