Since 10 is a 2-digit number, it is necessary to find the numbers of combinations containing it and not containing it separately.
There are 456 combinations containing 10 and 381 not containing it, making 837 in all.
Yuo can make only one combination of 30 digits using 30 digits.
9,999,876 is the greatest seven-digit number using four different digits.
Using the combination C(4,3) I got the answer 24. Its either a combination or a permutation.
There is only one combination. The order of the digits in combinations makes no difference. They are considered as being different if they are permutations, not combinations.
The order of the digits in a combination does not matter. So 123 is the same as 132 or 312 etc. There are 10 combinations using just one of the digits (3 times). There are 90 combinations using 2 digits (1 once and 1 twice). There are 120 combinations using three different digit. 220 in all.
The smallest even number using this combination of digits is 2568.
If the digits are all different then 18. Otherwise, 192.
89,999 different numbers i guess
1023
98765.
987654
Base two is also referred to as the binary number system.In the decimal system we use 10 different digits (0 to 9) to represent numbers. However, all numbers in binary consist of a combination of only 2 different digits; a "0" and/or a "1".All numbers can be represented using only these 2 digits.