Question
Find the number of integers greater than that can be formed by using the digits and if every digit can occur at most once in any number
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Text solutionVerified
Since each desired number is to be greater than , so we must have at the thousands place.
Case 1, when is at the thousands place
Then the hundreds, tens and ones place can be filled up by remaining digits in ways
Case 2, when is at the thousands place
Then the hundreds, tens and ones place can be filled up by remaining digits in ways
So, total number ways ways
Case 1, when is at the thousands place
Then the hundreds, tens and ones place can be filled up by remaining digits in ways
Case 2, when is at the thousands place
Then the hundreds, tens and ones place can be filled up by remaining digits in ways
So, total number ways ways
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Question Text | Find the number of integers greater than that can be formed by using the digits and if every digit can occur at most once in any number |
Answer Type | Text solution:1 |
Upvotes | 150 |