A number is chosen at random from the numbers 10 to 99 . By seeing the number a man will…
Mathematics · JEE Advanced · NTA Exams — Statistics and Probability
A number is chosen at random from the numbers 10 to 99 . By seeing the number a man will laugh if product of the digits is 12 . If he choose three numbers with replacement then the probability that he will laugh at least once is
- \(1-\left(\frac{3}{5}\right)^{3}\)
- \(\left(\frac{43}{45}\right)^{3}\)
- \(1-\left(\frac{4}{25}\right)^{3}\)
- \(1-\left(\frac{43}{45}\right)^{3}\)
Answer
(D) 1- ( 43 45 )^ 3
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