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Mathematics

A dice is rolled once. The probability of getting a prime number is :

  1. 12\dfrac{1}{2}

  2. 13\dfrac{1}{3}

  3. 14\dfrac{1}{4}

  4. 23\dfrac{2}{3}

Probability

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Answer

Total number of possible outcomes = 6 (i.e., 1, 2, 3, 4, 5, 6)

Number of favourable outcomes (Getting a prime number) = 3 (2, 3, 5)

P(Getting a prime number) = Number of favourable outcomesTotal number of possible outcomes\dfrac{\text{Number of favourable outcomes}}{\text{Total number of possible outcomes}}

= 36\dfrac{3}{6}

= 12\dfrac{1}{2}

Hence, option 1 is the correct option.

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