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AP EAMCET20226 Jul 2022Evening ShiftMathematicsProbabilityActual

An unbiased coin is tossed 3 times. If the third toss gets head, then the probability of getting at least one more head is

Options

  1. A3 / 4
  2. B1 / 4
  3. C1 / 2
  4. D1 / 3

Correct answer

A. 3 / 4

Step-by-step solution

If the third toss gets head, then the outcomes are HHH , HTH , THH , TTH . P( at least one head in first 2 trial )=3 / 4

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