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Mathematics Class 9, 61, Chapter 15: Probability, MULTIPLE-CHOICE QUESTIONS, Choose the correct answer from the given four options in the following questions:, 1. The sum of the probabilities of all events of a trial is, (a) less than 1, (b) 1, (c) greater than 1, d) between 0 and 1, 2. The probability of a sure event is, (a) more than 1, b) 1, (c) less than 1, (d) between 0 and 1, 3. Which of the following cannot be empirical probability of an event?, 4, (a), (b) 1, (c) 0, (d), [CBSE SP 2012], 4. The probability of an impossible event is, (b) less than 1, (a) 1, (c) 0, (d) more than 1, 5. In a cricket match, a batswoman hits the boundary 8 times out of 50 balls played, by her. The probability that she did not hit a boundary is, 4, (a), 25, 21, (b), 25, 41, (c), 50, 1, (d), 50, 6. A die is thrown 300 times and odd numbers are obtained 153 times. Then, the, probability of getting an even number is, 147, (a), 300, 153, (b), 300, 174, (c), 300, 147, (d), 153, 7. A thumbtack is tossed. It may land either with the pin, up or pin down. In tossing a thumbtack the probability, of the pin facing up is, Pin up, Pin down, (b) 1, 1, (c), 2, 1, (d) less than, 2, (a) 0, 8. Weather forecast from a news channel was correct 125 times out of 365 days., The probability that on a given day it was not correct is, 25, (a), 73, (b), 73, 16, (c), 73, 48, (d), 73, 9. A fair coin is tossed 100 times and the head occurs 58 times and tail 42 times., The experimental probability of getting head is, 1, (a), 21, (b), 50, 29, (c), 50, 42, (d), 58, 10. Two coins are tossed simultaneously 300 times. Either one or two heads are, obtained 198 times. The probability of getting no head is

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62, Mathematics Class 9, (a) 0.45, (b) 0.21, (с) 0.36, (d) 0.34, 11 In n trials of a random experiment, if an event E happens m times, then P(E) is, equal to, (a), m, (b), m, (c), m + n, (d), m + n, n

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CHАРТER 15, 5. (b), 6. (а), 4. (c), 10. (d), 3. (d), 2. (b), 8. (d), 1. (b), 11. (а), 9. (c), 7. (с)