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MHT CET202123 Sep 2021Morning ShiftMathematicsProbabilityActual

A die is thrown four times. The probability of getting perfect square in at least one throw is

Options

  1. A58 61
  2. B16 81
  3. C65 81
  4. D23 81

Correct answer

C. 65 81

Step-by-step solution

From 1 to 6 , we have 1 and 4 as perfect squares. Probability of getting perfect square is one throw of a die = 2 6 = 1 3 Probability of not getting perfect square in 4 throws of a die = 2 3 2 3 2 3 2 3 = 16 81 Required probability =1- 16 81 = 65 81

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