you can choose from 3, 4, 5, 6 and 7 and can place them on 3 digits
so 5 options over 3 digits. so 5*5*5 = 125 numbers
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If you're not allowed to use the same digit twice, then
The first digit can be any one of the five. For each choice ...
The second digit can be any one of the remaining four. For each choice ...
The third digit can be any one of the remaining three.
Total number of different arrangements = 5 x 4 x 3 = 60 .
15 of them.
You can make 24 numbers by rearranging the digits. However, you can make vastly more if you allow mathematical operations on the digits. For example, 3+5*8-6 = 37.
Some of them are: 11 13 17 37 and 79
In the number 65437, the last two digits are 37 - a digit is one single character in a string of numbers.
There are nine(9) numbers: 19, 28, 37, 46, 55, 64, 73, 82, 91
37/8 37 divided by 8 4.625 okay do you see how there are 8 digits in this number that is your divisor the digits themselves you add (3+4+2+5+6+8+4+5) you take the added numbers and divide the sum, 37, by 8, the number of digits, and you have 4.625.
Infinitely many numbers are relatively prime to 37. Because 37 is a prime number, all other numbers are relatively prime to it.
110
A reversible prime is a number such as 37, where reversing the order of the digits gives 73 which is also a prime.
a 37 digited number
There are 18 even numbers between 1 and 37
37 is a prime number. Its only factors are 1 and 37.