Q. Neha has 4 yellow t-shirts, 6 black t-shirts, and 2 blue t-shirts to choose from for her outfit today. She chooses a t-shirt randomly with each t-shirt equally likely to be chosen. Find the probability that a black or blue t-shirt is chosen for the outfit.

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Q. If a fair 15-sided dice is rolled, then is the probability that the roll is an odd number or prime number or both?

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Q. There are a total of 50 distinct books on a shelf such as 20 math books, 16 physics books, and 14 chemistry books. Find is the probability of getting a book that is not a chemistry book or not a physics book.

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Q. A number is selected from the first 20 natural numbers. Find the probability that it would be divisible by 3 or 7?

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Q. There are 24 red marbles in a bag 68 marbles, and 8 of those marbles are both red and white striped. 27 marbles are white striped and of those marbles, the same 8 marbles would be both red and white striped). Find the probability of drawing out a marble from the bag that is either red or white striped.

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Q. If spinner has 3 equal sectors colored yellow, blue and red, then the probability of landing on red or yellow after spinning this spinner is _______

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Q. In a secondary examination, 75% of the students have passed in History and 65% in Mathematics, while 50% passed in both History and Mathematics. If 35 candidates failed in both the subjects, what is the total number of candidates sit for that exam?

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Q. In a Press Conference, there are 450 foreign journalists. 275 people can speak German, 250 people can speak English, 200 people can speak Chinese and 260 people can speak Japanese. Find the maximum number of foreigners who cannot speak at least one language.

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Q. There is a class of 40 students out of which 16 are girls. There are 27 students who are right-handed. How many minimum numbers of girls who are left-handed in this class?

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Q. How many positive integers less than or equal to 100 are divisible by 2, 4 or 5?

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Q. How many ways are there to select exactly four clocks from a store with 10 wall-clocks and 16 stand-clocks?

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Q. If a 12-sided fair die is rolled twice, find the probability that both rolls have a result of 8.

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Q. How many positive divisors does 4000 = 2⁵ 5³ have?

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Q. Mina has 6 different skirts, 3 different scarfs and 7 different tops to wear. She has exactly one orange scarf, exactly one blue skirt, and exactly one black top. If Mina randomly selects each item of clothing, find the probability that she will wear those clothings for the outfit.

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Q. There are 6 possible routes (1, 2, 3, 4, 5, 6) from Chennai to Kochi and 4 routes (7, 8, 9, 10) from the Kochi to the Trivendrum. If each path is chosen at random, what is the probability that a person can travel from the Chennai to the via the 4th and 9th road?

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Q. If two 14-sided dice one is red and one is blue are rolled, find the probability that a 3 on the red die, a 5 on the blue die are rolled.

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Q. Suraj wants to go to Delhi. He can choose from bus services or train services to downtown Punjab. From there, he can choose from 4 bus services or 7 train services to head to Delhi. The number of ways to get to Delhi is?

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Q. Two cards are chosen at random from a standard deck of 52 playing cards. What is the probability of selecting a jack and a Spade from the deck?

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Q. If I throw 3 standard 7-sided dice, what is the probability that the sum of their top faces equals to 21? Assume both throws are independent to each other.

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Q. A box consists of 5 yellow, 12 red and 8 blue balls. If 5 balls are drawn from this box one after the other without replacement, find the probability that the 5 balls are all yellow balls.

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