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Give P(A) =3/5and P(B) =1/5dotFind P(A o...

Give `P(A) =3/5`and `P(B) =1/5dot`Find `P(A or B)`, if A and B are mutually exclusive events.

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For mutually exclusive events A and B
P(A or B) =P(A)+P(B)
∴P(A or B) = `3/5` + `1/5` = `4/5`
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NCERT-PROBABILITY-EXERCISE 16.3
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  2. A card is selected from a pack of 52 cards. (a)        How many point...

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  3. A fair coin is tossed four times, and people win Re 1 for each head a...

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  7. A coin is tossed twice, what is the probability that atleast one tail...

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  8. In a class of 60 students, 30 opted for NCC, 32 opted for NSS and 24 ...

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  9. The probability that a student will pass the final examination m both...

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  10. Three coins are tossed once. Find the probability of getting (i) 3 he...

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  11. Check whether the following probabilities P(A) and P(B) are consisten...

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  12. Fill in the blanks m following table:

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  14. In a lottery, a person choses six different natural numbers at random...

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  15. Events E and F are such that P(not E or not F) = 0.25, State whether E...

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  16. A and B are events such that P(A) = 0. 42, P(B) = 0. 48and P(A a n d B...

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  17. Give P(A) =3/5and P(B) =1/5dotFind P(A or B), if A and B are mutually ...

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  18. If E and F are events such that P(E) = 1/4, P(F) =1/2 and P(E and F)...

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  19. In Class XI of a school 40% of the students study Mathematics and 30%...

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  20. In an entrance test that is graded on the basis of two examinations, ...

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