5+5+(-1)+1
Chat with our AI personalities
Oh, what a happy little question! With the digits 1-9 and 0, you have 10 options for each digit in a 4-digit number. So, you can form 10 x 10 x 10 x 10 = 10,000 different 4-digit numbers. Isn't that just delightful? Just imagine all the beautiful combinations you can create!
Oh, dude, you wanna list out all the 4-digit combinations without repeating digits from 0 to 9? That's like 10 choose 4, which is 10! / (4!(10-4)!), which equals 210. So, there are 210 unique 4-digit combinations you can make using numbers 0 to 9 without repeating any digits. Cool, right?
all real numbers :)
1, 2, 3, 4, 5, 6 and 10
The first ten numbers in pie are : 3.141592654 (the last 4 is from rounding it from the number below) The sixteen numbers of pie are: 3.141592653589793