For two dice, maximum sum is 12. An event with probability 0 is getting a sum of 13. An outcome or event with probability 1 is getting a sum between 2 and 12.
I throw a pair of 6-sided dice. Write down an event that has a probability of 0 and an outcome that has a probability of 1.
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When throwing two 6-sided dice, the sum of numbers ranges from 1 + 1 = 2 to 6 + 6 = 12.
Event with probability 0: ‘Getting a sum of 13’ (or getting a negative sum).
This is an impossible event because the highest possible total is 12.
Event with probability 1: ‘Getting a sum between 2 and 12 inclusive’ (or getting a sum less than 13). This is a certain event because every possible outcome satisfies it.
For more NCERT Solutions of Class 9 Ganita Manjari Chapter 7 The Mathematics of Maybe: Introduction to Probability Question Answer (2026-27)
https://www.tiwariacademy.com/ncert-solutions/class-9/maths/ganita-manjari-chapter-7/