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A dice is thrown randomly. What is the probability that the number shown on the dice is not divisible by 3?
1. 1/3
2. 2/3
3. 1/4
4. 2/5

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Correct Answer - Option 2 : 2/3

Formula used:

Probability of an event = Number of favorable outcomes/Total outcomes


Numbers on dice not divisible by 3 are {1, 2, 4, 5}

⇒ Number of favorable outcomes = 4

Total possible outcomes = 6

∴ The probability that the number shown on the dice is not divisible by 3 is 4/6 = 2/3 

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