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How do you multiply a three digit number by a four digit number?
You put the four digit number at the top of the three digit number and you do the same thing as you would do with a two digit number with a 3 digit number.
Four times the sum of the digits of a two-digit number is equal to the number if the digits are reversed the resulting number is 27 greater than the original number what is the number?
The number is 36
What is the highest 7 digit number with 3 different digits?
> 9999876 Actually, 9999876 has four different digits (6, 7, 8, 9). The largest 7-digit number with three different digits is 9999987.
What is the difference between the largest five-digit number and the smallest six-digit number?
1 The largest five-digit number is 99999 and the smallest six-digit number is 100000, so the difference is one. If you're just looking for an answer to a homework question, that's all you need. For the brainy: Suppose the answer was greater than one. That would mean that there are one or more numbers between the largest five-digit number and the smallest six-digit number that cannot be written with either five or six digits. Either they would have to be written with four or fewer digits, which would make them smaller than any five-digit number, or with seven or more digits, which would make them larger than any six-digit number. If the answer was less than one, it would mean that it would be possible to have a five digit number that was greater than a six-digit one. So the answer must be one.
How many four digit whole numbers are there such that the thousand digit is odd the hundreds digit is even and all four digits are different?
5*5*4*4 = 400
