Question

The probability of an impossible event is-

• A. More than Zero
• B. Always Zero
• C. Sometimes Zero
• D. Always One

Hint:

Remember: Impossible event = Probability 0, Certain event = Probability 1.

Answer 1

The Correct Option is B

Step 1: Probability Concept.
Probability quantifies the likelihood of an event's occurrence.
It ranges from 0 (impossible) to 1 (certain).

Step 2: Impossible Events.
An impossible event cannot occur under any circumstances.
Example: Rolling a 7 on a standard die.
Such an event has a probability of zero.

Step 3: Option Evaluation.
- (1) More than zero: Incorrect; impossible means zero chance.
- (2) Always zero: Correct; impossible equals probability 0.
- (3) Sometimes zero: Incorrect; it is consistently zero.
- (4) Always one: Incorrect; this signifies a certain event.

Step 4: Final Determination.
The probability of an impossible event is consistently zero.