Question 1142184
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1. what is the greatest 8-digit number that can be formed using the cards once?
Write the given digits in descending order.<br>
2. what is the least 8-digit number that can be formed using the cards once?
Write the given digits in ascending order.  Then, since 0 can't be the first digit, switch the first and second digits.<br>
3. What is the greatest 8-digit odd number that can be formed using the cards once?
Take the answer from (1) and move the smallest odd digit to the end.<br>
4. what is the least 8-digit even number that can be formed using the cards once?
Take the answer from (2) and move the largest even digit all the way to the end.<br>
What is the sum of the greatest and the least 8-digit numbers that can be formed using the cards once?
Answer (1) plus answer (2).