Chapter 16 – Probability
21. In a class of 60 students, 30 opted for NCC, 32 opted for NSS and 24 opted for both NCC and NSS. If one of these students is selected at random, find the probability that (i) The student opted for NCC or NSS. (ii) The student has opted neither NCC nor NSS. (iii) The student has opted NSS but not NCC.
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21. In a class of 60 students, 30 opted for NCC, 32 opted for NSS and 24 opted for both NCC and NSS. If one of these students is selected at random, find the probability that (i) The student opted for NCC or NSS. (ii) The student has opted neither NCC nor NSS. (iii) The [...]
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21. In a class of 60 students ,
30 opted for NCC ,
32 opted for NSS and 24 opted for both NCC and NSS. If one of these students is selected at random ,
find the probability that (i) The student opted for NCC or NSS. (ii) The student has opted neither NCC nor NSS. (iii) The student has opted NSS but not NCC. ,
20. The probability that a student will pass the final examination in both English and Hindi is 0.5 and the probability of passing neither is 0.1. If the probability of passing the English examination is 0.75, what is the probability of passing the Hindi examination?
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20. The probability that a student will pass the final examination in both English and Hindi is 0.5 and the probability of passing neither is 0.1. If the probability of passing the English examination is 0.75, what is the probability of passing the Hindi examination? 16. A die is thrown repeatedly untill a six comes [...]
19. In an entrance test that is graded on the basis of two examinations, the probability of a randomly chosen student passing the first examination is 0.8 and the probability of passing the second examination is 0.7. The probability of passing atleast one of them is 0.95. What is the probability of passing both?
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19. In an entrance test that is graded on the basis of two examinations, the probability of a randomly chosen student passing the first examination is 0.8 and the probability of passing the second examination is 0.7. The probability of passing atleast one of them is 0.95. What is the probability of passing both? 16. [...]
18. In Class XI of a school 40% of the students study Mathematics and 30% study Biology. 10% of the class study both Mathematics and Biology. If a student is selected at random from the class, find the probability that he will be studying Mathematics or Biology.
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18. In Class XI of a school 40% of the students study Mathematics and 30% study Biology. 10% of the class study both Mathematics and Biology. If a student is selected at random from the class, find the probability that he will be studying Mathematics or Biology. 18. In Class XI of a school 40% [...]
17. A and B are events such that P(A) = 0.42, P(B) = 0.48 and P(A and B) = 0.16. Determine (i) P(not A), (ii) P(not B) and (iii) P(A or B)
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17. A and B are events such that P(A) = 0.42, P(B) = 0.48 and P(A and B) = 0.16. Determine (i) P(not A), (ii) P(not B) and (iii) P(A or B) (ii) P(not B) and (iii) P(A or B) 17. A and B are events such that P(A) = 0.42 P(B) = 0.48 and [...]
16. Events E and F are such that P(not E or not F) = 0.25, State whether E and F are mutually exclusive.
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16. Events E and F are such that P(not E or not F) = 0.25, State whether E and F are mutually exclusive. 16. Events E and F are such that P(not E or not F) = 0.25 State whether E and F are mutually exclusive. November 5, 2021 Category: Chapter 16 - Probability , [...]
15. If E and F are events such that P(E) = 1/4 , P(F) =1/2 and P(E and F) = 1/8 , find (i) P(E or F), (ii) P(not E and not F)
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15. If E and F are events such that P(E) = 1/4 , P(F) =1/2 and P(E and F) = 1/8 , find (i) P(E or F), (ii) P(not E and not F) (ii) P(not E and not F) 15. If E and F are events such that P(E) = 1/4 find (i) P(E or [...]
14. Given P(A) = 3/5 and P(B) = 1/5 . Find P(A or B), if A and B are mutually exclusive events.
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14. Given P(A) = 3/5 and P(B) = 1/5 . Find P(A or B), if A and B are mutually exclusive events. 14. Given P(A) = 3/5 and P(B) = 1/5 . Find P(A or B) if A and B are mutually exclusive events. November 5, 2021 Category: Chapter 16 - Probability , Maths , [...]
13. Fill in the blanks in following table: (iii) 0.5 0.35 . . . 0.7
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13. Fill in the blanks in following table: (iii) 0.5 0.35 . . . 0.7 13. Fill in the blanks in following table: (iii) 0.5 0.35 . . . 0.7 November 5, 2021 Category: Chapter 16 - Probability , Maths , NCERT Exemplar Class 11 ,
13. Fill in the blanks in following table: (ii) 0.35 . . . 0.25 0.6
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13. Fill in the blanks in following table: (ii) 0.35 . . . 0.25 0.6 13. Fill in the blanks in following table: (ii) 0.35 . . . 0.25 0.6 November 5, 2021 Category: Chapter 16 - Probability , Maths , NCERT Exemplar Class 11 ,