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Mathematics

Out of 800 identical articles some are selected and remaining are rejected. If the probability of an article to be rejected is 0.425; the number of rejected articles is :

  1. 340

  2. 800

  3. 430

  4. 560

Probability

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Answer

⇒ P(rejecting an item) = No. of favourable outcomesTotal no. of possible outcomes\dfrac{\text{No. of favourable outcomes}}{\text{Total no. of possible outcomes}}

⇒ 0.425 = No. of favourable outcomes800\dfrac{\text{No. of favourable outcomes}}{800}

⇒ No. of favourable outcomes = 0.425 × 800 = 340.

Hence, Option 1 is the correct option.

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