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MHT CET2018MathematicsProbability

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

Options

  1. A16 81
  2. B65 81
  3. C23 81
  4. D58 81

Correct answer

B. 65 81

Step-by-step solution

( P ) (getting perfect square in at least one throw) (=1- P ) (not getting any perfect square in any throw) And among 1 to 6 , there are 2 perfect squares-1 and 4 . (=1- ( 4 6 4 6 4 6 4 6 ) ) (=1- 16 81 ) (= 65 81 )

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