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Out of all possible three digit numbers, a number is picked at random. The probability that the number does not contain the digit 6 is _______.
  • a)
    0.72
  • b)
    0.71
  • c)
    0.70
  • d)
    0.75
Correct answer is option 'A'. Can you explain this answer?
Most Upvoted Answer
Out of all possible three digit numbers, a number is picked at random...
Total number of 3 digit numbers = 900 (Digits from 100 to 999)
At first place, 0 and 6 aren't allowed so 8 choices for filling first place; for second and third place, all digits are allowed except the digit 6, hence 9 choices for filling second and third place.
n(Not containing the digit 6) = (8 x 9 x 9)
P( Not containing the digit 6) =
=
Solve this to get 0.72 as the answer.
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Out of all possible three digit numbers, a number is picked at random. The probability that the number does not contain the digit 6 is _______.a)0.72b)0.71c)0.70d)0.75Correct answer is option 'A'. Can you explain this answer?
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