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Class 12 Maths Practice Test - Independent Events - Probability
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Class 12 Maths Practice Test - Independent Events - Probability
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12 Questions

1. A bag contains 4 red, 2 green and 7 blue balls. What is the probability of drawing a red ball and the first ball drawn is blue? The balls drawn are replaced in the bag.
2. What is the formula for independent events?
3. A bag contains a pair of gloves in colours blue, red, yellow and pink. You reach into the
bag and choose a pair of gloves without looking. You replace this pair and then choose another pair of gloves. What is the probability that you will choose the pink pair of gloves both times?
4. What is the probability of a coin landing on the tail and the dice showing 2 when a coin is tossed and dice is thrown?
5. Events P and Q are independent if P(A∩B) = P(A) P(B).
6. A box contains a pair of socks in colours blue, red, yellow, green and pink. You reach into the box and choose a pair of socks without looking. You replace this pair and then choose another pair of socks. What is the probability that you will choose the yellow pair of socks both times?
7. A bag contains 3 red, 2 white and 4 green balls. What is the probability of drawing the second ball to be green if the first ball drawn is red? The balls are replaced in the bag.
8. What is the probability of obtaining 4 heads in a row when a coin is tossed?
9. A card is chosen at random from a deck of cards and then replaced, a second card is chosen. What is the probability of choosing a four and then a queen?
10. A dice is thrown twice, what is the probability of getting two 3’s?
11. A bag contains 3 red, 2 white and 4 green balls. What is the probability of drawing the second ball to be white and the first ball drawn is green? The balls are replaced in the bag.
12. What are independent events?

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