You get the largest number if you sort the digits, from largest to smallest.
the largest five digit number that can be formed using the digits 7 and 9 is 97,000
874321 is the largest number made from all these digits.
For this type of "the largest number which..." questions, you need to advance from left to right, using the largest possible digit in each case. For the first two digits, that would be 9, for the third digit (the right-most digit), the largest digit which will make this possible is an 8.
97632 is the largest number containing these digits. To make the largest number simply order the numbers in descending order. As it happens this results in an even number so nothing further is necessary.
You get the largest number if you sort the digits, from largest to smallest.
543210
the largest five digit number that can be formed using the digits 7 and 9 is 97,000
874321 is the largest number made from all these digits.
99997
Assign the digits from left to right, using the largest possible digit in each case. Don't forget to reserve an even digit for the last position.
9876543210
972.
99 is the largest two digit number. If I can use the digits anyway I want, then 9 to the 9th power is larger
651
To find the largest three-digit even number using the digits 3, 4, and 5, you need to arrange these digits in descending order to maximize the number, ensuring that the last digit is even. The largest possible even number is 542
It looks like you're asking what is the largest 4-digit number which has four 4's for digits - with a four digit number using four 4's, there is only one such number: 4444. Maybe I'm not understanding the wording of your question.