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Add the two greatest possible four digit numbers. 9999 + 9999

Q: What is the greatest possible sum of two 4 digit numbers?

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what is the least possible sum of two 4-digit numbers?what is the least possible sum of two 4-digit numbers?

910

In base ten it would be 19998. The sum could be much larger assuming different bases. You need to specify the base.

The greatest 3-digit number is 999. 9+9+9 = 27 The sum of the greatest 3-digit number is 27.

199999.

Related questions

198

what is the least possible sum of two 4-digit numbers?what is the least possible sum of two 4-digit numbers?

Highest 2-digit number = 99 Highest 1-digit number = 9 Highest possible sum from 2, 2-digit numbers = 198 Highest possible sum from 2, 1-digit numbers = 18

910

19, 998.

In base ten it would be 19998. The sum could be much larger assuming different bases. You need to specify the base.

93

What is the sum of greatest 3-digit 4-digit 5digit

(9,999) + (9,999) = 19,998 So it looks like the sum of two 4-digit numbers can't have more than 5 digits.

The greatest 3-digit number is 999. 9+9+9 = 27 The sum of the greatest 3-digit number is 27.

Their product.

The greatest 5 digit number is 98765. The greatest 5 digit number that doesn't contain any of those digits is 43210. The difference between them is 55555.The two five digit numbers using all ten digits once and only once between them that sum to the largest value are 97531 and 86420. They sum to 183,951 and have a difference of 11111. These two numbers are not unique ... you can switch any pair of digits between the two numbers as long as you keep them in the same position without changing the sum, though this will change the difference.