210
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.
Natural numbers.
The set of integers, rational numbers, real numbers, complex numbers are some of the sets. Also, many of their subsets: for example, all numbers divisible by 3.
7.438
There are eight sets of 3 consecutive numbers in 12 hours.
210
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.
There are infinitely many sets of this type. Some of the common sets include natural numbers, integers, rational numbers, real numbers, complex numbers. Also, as an example, all sets of multiples of some whole number, for instance: { ... -6, -4, -2, 0, 2, 4, 6, ...} {... -9, -6, -3, 0, 3, 6, 9, ...} etc.
There are infinitely many multiples of ten. There are infinitely many sets of 2, 3, 4, ..., infinitely many numbers that add up each one of the multiples of ten. It is, therefore, impossible to answer the question.There are infinitely many multiples of ten. There are infinitely many sets of 2, 3, 4, ..., infinitely many numbers that add up each one of the multiples of ten. It is, therefore, impossible to answer the question.There are infinitely many multiples of ten. There are infinitely many sets of 2, 3, 4, ..., infinitely many numbers that add up each one of the multiples of ten. It is, therefore, impossible to answer the question.There are infinitely many multiples of ten. There are infinitely many sets of 2, 3, 4, ..., infinitely many numbers that add up each one of the multiples of ten. It is, therefore, impossible to answer the question.
The LCM of 3 and 9 is 9.
Natural numbers.
-3
3 sets
The set of integers, rational numbers, real numbers, complex numbers are some of the sets. Also, many of their subsets: for example, all numbers divisible by 3.
7.438
All sets of 3 consecutive numbers will have the same mean and median