A probability of 1 means the event is:
AUnlikely
BDoubtful
CUnproved
DCertain
Answer & Solution
Correct answer: D. Certain
1. A probability of 0 means the event cannot happen.
2. The other end of the scale is the opposite.
3. A probability of 1 means the event is certain.
4. So the answer is certain.
_Source: NCERT Class 9 Mathematics, Ch 7 'The Mathematics of Maybe: Introduction to Probability'_
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