SOLUTION: Hello,
Given a sey of digits 1 to 9. 9 digit numbers are to be formed from the set without repetition. Find the possible number of ways of getting the digits 1 and 2 precede the d
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-> SOLUTION: Hello,
Given a sey of digits 1 to 9. 9 digit numbers are to be formed from the set without repetition. Find the possible number of ways of getting the digits 1 and 2 precede the d
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Question 1151702: Hello,
Given a sey of digits 1 to 9. 9 digit numbers are to be formed from the set without repetition. Find the possible number of ways of getting the digits 1 and 2 precede the digits 3 and 4. Answer by greenestamps(13198) (Show Source):
The number of 9-digit numbers using the digits 1-9 once each is 9!.
The probability that the 1 precedes the 3 is 1/2.
The probability that the 1 precedes the 4 is 1/2.
The probability that the 2 precedes the 3 is 1/2.
The probability that the 2 precedes the 4 is 1/2.
The number of 9-digit numbers using the digits 1-9 once each, in which the 1 and 2 precede the 3 and 4, is
