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Question

An Event is most unlikely to happen. Its probabilities is:

This question was previously asked in
HTET 2025 Level 1 PRT Question Paper (5-Jul-2026)
The correct answer is

0.0001

The probability of an event always lies between 0 and 1; a value closer to 0 indicates that the event is less likely to occur, while a value closer to 1 indicates it is more likely to occur.

Among the given options, \(0.0001\) is the smallest value, so it represents the lowest chance of occurrence.

Therefore, an event that is most unlikely to happen has probability \(0.0001\).

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Important Questions from Probability

  1. Three dice are thrown. What is the probability of getting a sum which is a perfect square?

  2. Two distinct natural numbers from 1 to 9 are picked at random. What is the probability that their product has 1 in its unit place?

  3. Two dice are thrown. What is the probability that difference of numbers on them is 2 or 3 ?

  4. Suppose that there is a chance for a newly constructed building to collapse, whether the design is faulty or not. The chance that the design is faulty is 10%. The chance that the building collapses is 95% if the design is faulty, otherwise it is 45%. If it is seen that the building has collapsed, then what is the probability that it is due to faulty design?

  5. What is the probability that all three boys sit together?

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