121.
A box contains 3 blue marbles, 4 red, 6 green marbles and 2 yellow marbles. If two marbles are drawn at random, what is the probability that at least one is green?

122.
If four coins are tossed, the probability of getting two heads and two tails is -

123.
A dice is rolled twice. What is the probability of getting sum 9?

124.
There are 2 pots. One pot has 5 red and 3 green marbles. Other has 4 red and 2 green marbles. What is the probability of drawing a red marble?

125.
Three unbiased coins are tossed. What is the probability of getting at least 2 tails?

126.
What is probability of drawing two clubs from a well shuffled pack of 52 cards?

127.
What is the possibility of having 53 Thursdays in a non-leap year?

128.
A box has 6 black, 4 red, 2 white and 3 blue shirts. Find the probability of drawing 2 black shirts if they are picked randomly?

129.
What will be the possibility of drawing a jack or a spade from a well shuffled standard deck of 52 playing cards?

130.
Tickets numbered 1 to 50 are mixed and one ticket is drawn at random. Find the probability that the ticket drawn has a number which is a multiple of 4 or 7?

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