EASY
10th CBSE
IMPORTANT
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A box contains 3 blue, 2 white and 4 red marbles. If a marble is drawn at random from the box, what is the probability that it will not be a white marble?

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Important Questions on Probability

EASY
10th CBSE
IMPORTANT
Cards, each marked with one of the numbers 6, 7, 8, ....15, are placed in a box and mixed thoroughly. One card is drawn at random form the box. What is the probability of getting a card with number less than 10?
EASY
10th CBSE
IMPORTANT
Which of the following number best expresses the probability of a man dying before completing 150 years of age?
EASY
10th CBSE
IMPORTANT
Two coins are tossed. The probability of getting at most one head is:
EASY
10th CBSE
IMPORTANT
A lot of 25 bulbs contains 5 defective bulbs. A bulb is drawn at random from the lot. The probability of having a good bulb is
MEDIUM
10th CBSE
IMPORTANT
A jar contains 6 red, 5 black and 3 green marbles of equal size. The probability that a randomly drawn marble would be green in color is
EASY
10th CBSE
IMPORTANT
In a class of 30 students, there are 16 girls and 14 boys. Five are A grade students, and three of these students are girls. If a student is chosen at random, the probability of it being a girl student or A grade student is
EASY
10th CBSE
IMPORTANT
If P(A) is the probability of an event A, then
EASY
10th CBSE
IMPORTANT
Cards each marked with one of the numbers 4, 5, 6, ., 20 are placed in a box are mixed thoroughly. The probability that a randomly drawn card is an even prime number is