4! = 24 ■
With 123 digits you can make 123 one-digit numbers.
Ten different digits can be used to make 10C4 = 10*9*8*7/(4*3*2*1) = 210 four-digit numbers. Either numbers starting with 0 are permitted or the 10 digits do not contain a 0.
how make the answer im don/now
3*3*2*1 = 18 of them.
9876 is the largest four digit number you can make if all the digits must be different.
With 123 digits you can make 123 one-digit numbers.
Ten different digits can be used to make 10C4 = 10*9*8*7/(4*3*2*1) = 210 four-digit numbers. Either numbers starting with 0 are permitted or the 10 digits do not contain a 0.
3*3*2*1 = 18 of them.
how make the answer im don/now
9876 is the largest four digit number you can make if all the digits must be different.
Twelve of them.
4 x 3 x 2 ie 24
9
61 is prime. You cannot make 61 by multiplying four digits.
6 if all digits are different, 27 otherwise.
how make the answer im don/now
1,956 different numbers can be made from 6 digits. You can calculate this by using the permutation function in a summation function, like this: Σ6k=1 6Pk = 6P1+6P2+...+6P5+6P6 What this does is calculate how many 1 digit numbers you can make from 6 digits, then how many 2 digit numbers can be made from 6 digits and adds the amounts together, then calculates how many 3 digit numbers can be made and adds that on as well etc.