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BeauBelpriques numbers are a class of numbers that are the sum of the factorials of their digits. For a number to be a belpriques number, it must satisfy the equation n = n1! + n2!, where n is a two-digit number and n1 and n2 are its digits. There are only four two-digit belpriques numbers: 25, 34, 39, and 58. These numbers are derived by checking all possible combinations of two-digit numbers and calculating the sum of their factorials.
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How do you multiply by 2 or 3 digit numbers?
first digit time second digit and second digit times first digit then repeat
How many three digit counting numbers are not multiples of 2?
There are 450 of them.
How many 3-digit numbers can made using the digits 2 3 4?
If you can repeat a digit, there are 27. If you can't repeat a digit, there are only 6.
How many four digit numbers can be formed out of 123 if a digit can be repeated?
There are 3 values (1, 2, 3) for each of the 4 digits. Therefore, there are 3*3*3*3 or 81 four digit numbers that can be formed.
How many 4 digit combinations can you get from numbers 1226?
To calculate the number of 4-digit combinations you can get from the numbers 1, 2, 2, and 6, we need to consider that the number 2 is repeated. Therefore, the total number of combinations is calculated using the formula for permutations of a multiset, which is 4! / (2!1!1!) = 12. So, there are 12 unique 4-digit combinations that can be formed from the numbers 1, 2, 2, and 6.
