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Q: Name the sets of numbers which -1/2 belongs?

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It belongs to any set that contains it: for example, {4.75, -12, pi, sqrt(5), 29}. It belongs to the set of integers which is a proper subset of rational numbers which is a proper subset of real numbers which is a proper subset of complex numbers. So -12 belongs to all the above sets.

20 and 30, for one.

Here are some sets of numbers that have the greatest common factor of 12: 12, 36 12, 288 24, 84 24, 48, 60 60, 96 144, 156

The numbers are: 12 and 72

The prime numbers between 12 and 48 are 13,17,19,23,29,31,37,41,43,47.

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-12 belongs to at least the sets of all numbers, of integers and negative integers, of rational numbers and negative rational numbers, and all negative numbers.

It belongs to any set that contains it: for example, {4.75, -12, pi, sqrt(5), 29}. It belongs to the set of integers which is a proper subset of rational numbers which is a proper subset of real numbers which is a proper subset of complex numbers. So -12 belongs to all the above sets.

To any set that contains it! It belongs to {12}, or {12, sqrt(2), pi, -3/7}, or all whole numbers between 3 and 53, or multiples of 3, or composite numbers, or counting numbers, or integers, or rational numbers, or real numbers, or complex numbers, etc.

-12 belongs to negative integers

There are eight sets of 3 consecutive numbers in 12 hours.

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.

belongs to an infinite number of sets. For example, the Real Numbers, the Rational Numbers, Integers, negative integers, odd negative integers, negative primes numbers, the set {12, -17, 98} or {2.76, pi, -17, k, wikianswers}. In fact any collection, however random, of numbers or other things, that includes -17.

The GCF is 6.

There is no single answer to that. You could come up with many sets of numbers that would have those properties.

24, 48, 72 and so on.

20 and 30, for one.

There are many possible sets. (1, 60) is one such.

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