You can select 12 numbers for the first digit, 11 numbers for the second digit, and 10 numbers for the third digit; so 12*11*10 = 1320 sets of 3 numbers can be made out of 12 different numbers.
11 (eleven)
342 of them.
If 11 and 111 is counted as 1 digit, the answer is 119.If 11 is counted as 2 digit 1's, the answer is 131.
There is no THE two-digit natural number because there are many of them. 10, 11, 12, .. 99 are all 2-digit natural numbers.
You can select 12 numbers for the first digit, 11 numbers for the second digit, and 10 numbers for the third digit; so 12*11*10 = 1320 sets of 3 numbers can be made out of 12 different numbers.
All of the odd numbers between 11 and 99 inclusive are two digit numbers that are not multiples of 2. There are 45 of them.
8 of them.
11 (eleven)
342 of them.
If 11 and 111 is counted as 1 digit, the answer is 119.If 11 is counted as 2 digit 1's, the answer is 131.
3
11 times
There are 17 ranging from 110 to 297
There are many 4 digit numbers having 3 and 11 as factors. One of them is 1089 whose factors are 3,3,11,11.
There is no THE two-digit natural number because there are many of them. 10, 11, 12, .. 99 are all 2-digit natural numbers.
11