Want this question answered?
24
You can select 9 numbers for the first digit, 8 numbers for the second digit, and 7numbers for the third digit; so 504 (e.g. 9*8*7) different three digit numbers can be written using the digits 1 through 9.
No 5291 is not a prime using 2 numbers. It is a prime using three numbers.
89,999 different numbers i guess
6 possible 3 digit combonations
1000
24
You can select 9 numbers for the first digit, 8 numbers for the second digit, and 7numbers for the third digit; so 504 (e.g. 9*8*7) different three digit numbers can be written using the digits 1 through 9.
No 5291 is not a prime using 2 numbers. It is a prime using three numbers.
89,999 different numbers i guess
There are 3*2*1 = 6 of them.
6 possible 3 digit combonations
Using 1, 2, and 3, you can make 27 whole numbers.
Using the digits of 1345678, there are 210 three digit numbers in which no digit is repeated.
81 As there are no limits stated then you can have a number comprising a repeated single digit (such as 2222), two pairs of numbers (e.g. 2244) or three different numbers (such as 2462). The first digit can be one of any of the 3 numbers. The second digit can be one of any of the three numbers, as can the third digit and also the fourth. Then you can have 3 x 3 x 3 x 3 = 81 different 4-digit numbers using the three given numbers.
Using the combination fuction, chose three numbers from 45 numbers. The answer is 14,190.
depends on your answer