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Event

The probabili...

Question

The probability of a sure event is $:$

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Solution

The value of the probability of an impossible event $= 0$
The value of the probability of a sure event $= 1$
An event is a sure event that always happens $.$
Example $:$ it’s a sure event to obtain a number between $1$ and $6$ when rolling an ordinary die $.$
Hence $,$ the probability of a sure event is $0 .$

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What is the probability of a sure event?
(a) 0 (b) $\frac{1}{2}$ (c) 1 (d) less then 1

Q. Fill in the blanks:

(i) Probability of a sure event is ...............

(ii) Probability of an impossible event is ................

(iii) The probability of an event (other than sure and impossible event) lies between .................

(iv) Every elementary event associated to a random experiment has .............. probability.

(v) Probability of an event A + Probability of event 'not A' = ................

(vi) Sum of the probabilities of each outcome in an experiment is ................

Q. Fill in the blanks:
(i) The probability of an impossible event is ....... .
(ii) The probability of a sure event is ........ .
(iii) For any event E, P(E) + P (not E) = ........ .
(iv) The probability of a possible but not a sure event lies between ......... and ........ .
(v) The sum of probabilities of all the outcomes of an experiment is ....... .

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(i) The probability of an impossible event is ........ .
(ii) The probability of a sure event ......... .
(iii) If E is an event and P(E) = p then p(not E) = ........ .
(iv) If E is a possible event and it is not a sure event then P(E) lies between ...... and ....... .
(v) P(E) + P(not E) = ........ .
(vi) The probability of occurrence of an event cannot be greater than ....... .

The probability of a sure event is:

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