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Kriti
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Write the sample space and calculate the probability based on the given information. (i) Two dice are rolled. What is the probability that the sum is a prime number greater than 5? (ii) A bag contains 4 red, 3 green, and 2 blue balls. Two balls are drawn without replacement. What is the probability that both are of different colours? (iii) Three coins are tossed. What is the probability that the first coin shows heads and exactly two heads occur in total? (iv) A four-digit number is formed using the digits 1, 2, 3, and 4 with no repetition. What is the probability that the number is even? (v) A student takes a multiple-choice test with 3 questions, each having 4 options (A, B, C, D), with only one correct answer. What is the probability that the student guesses and gets exactly 2 answers correct?

(i) Primes 7 and 11 give 8 pairs, P = 8/36 = 2/9. (ii) P(different) = 1 – P(same) = 1 – 13/36 = 23/36. (iii) Favourable outcomes {HHT, HTH}, P = 2/8 = 1/4. (iv) Last digit 2 or 4, P = ...

3 green and 2 blue ballsa bag contains 4 redganita manjari class 9 exercise 7.2 solutionsganita manjari class 9 exercise 7.3 solutionsganita manjari class 9 exercise 7.4 solutionsncert solutions – the mathematics of maybe: introduction to probabilityprobability that the sum is a prime number greater than 5
Virat
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(i) The sample space is S = {(Samosa, Chai), (Samosa, Lassi), (Pakora, Chai), (Pakora, Lassi), (Bhaji, Chai), (Bhaji, Lassi)}, giving 6 outcomes. (ii) The event selecting Samosa is E = {(Samosa, Chai), (Samosa, Lassi)}.

ganita manjari class 9 exercise 7.2 solutionsganita manjari class 9 exercise 7.3 solutionsganita manjari class 9 exercise 7.4 solutionsncert class 9 ganita manjari chapter 7 question answersample space of all possible snack and drink combinationsselecting samosa as a snackthere are 3 popular snacks availablevillage fair
Virat
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When rolling a 6-sided die, sample space is {1, 2, 3, 4, 5, 6}, giving 6 possible outcomes. The even numbers are 2, 4, and 6, so probability is 3/6 = 1/2 = 0.5.

class 9 ganita manjari chapter 7 solutionsganita manjari class 9 exercise 7.2 solutionsprobability of getting an even numbersolutions - the mathematics of maybe: introduction to probabilitythe mathematics of maybe: introduction to probability solutionswhen rolling a fair 6-sided die
Virat
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In an illustrative 20-toss trial getting 11 heads and 9 tails, experimental probability of heads is 11 / 20 = 0.55. For the next toss, because a coin has no memory, tails probability remains 1 / 2 = 0.5.

a coin 20 times and record the result each time (heads or tailscalculate the experimental probabilityganita manjari class 9 exercise 7.2 solutionsncert class 9 ganita manjari chapter 7 question answersample question from class 9 math chapter 7 introduction to probability
Virat
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The probability for Arts Club is 11 / 40 = 0.275 (27.5%). The sample proportion for Sports Club is 9 / 40. Across 800 students, the estimated count is (9 / 40) x 800 = 180 students.

cbse class 9 ganita manjari chapter 7 solutionschapter 9 the mathematics of maybe: introduction to probability question answerganita manjari class 9 exercise 7.2 solutionsprobability that a randomly chosen studentsurvey is conducted at a school where a random sample of 40 studentswhole school are likely to prefer the sports club