Question

The probability of the event "the sun rises in the east" is _____
(a) 0
(b) 1
(c) 1/2
(d) 1/4

Answer 1

Suppose there is a total of 'x' number of days, and it is pretty obvious that sun rises in the east. So the number of days in which the sun rises in the east is 'x'

probability = possibility ÷ total no of observations.

Therefore,

x÷x= 1

So the answer is :-

(b) 1

Answer 2

The probability of the event "the sun rises in the east" is 1. (Option-B)

• The probability of occurrence of any event can be calculated mathematically by dividing the total chances of occurrence of that particular event (favorable event) by the sum of the chances of occurrence of all the possible events (including both favorable and unfavorable events).
• It is a universal fact that the sun rises in the east and sets on the west.
• As per the question, the favorable event is the sun rising in the east. As it is a universal truth and there is no chance or possibility of occurrence of any other event, we get the full probability of the event.
• That's why the probability of the event "the sun rises in the east" is 1.