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How can a number belong to more than one set of numbers?
A set is just a way of describing numbers, and numbers can be described in more than one way. If set A is (for example) all positive prime numbers, and set B is all numbers between 0 and 10, then there are some numbers (2, 3, 5, and 7) that could belong to both sets.
What number set does 5.385164807 belong to?
To any set that contains it! It belongs to {5.385164807}, or {45, sqrt(2), pi, 5.385164807, -3/7}, or all numbers between 4 and 53, or rational numbers, or real numbers, or complex numbers, etc.
What set of numbers does -12 belong to?
Any set that contains -1.2, whether finite or infinite. For example, the set consisting of only -1.2 ie {-1.2}, the set consisting of -1.2 and 5 = {-1.2,5}, the set consisting of -1.2 and 3 and sqrt(17) = {-1.2,3,sqrt(17)}, and so on.
Which subset does the square root of 13 belong in?
It belongs to many many subsets including: {sqrt(13)}, The set of square roots of integers The set of square roots of primes The set of square roots of numbers between 12 and 27 {3, -9, sqrt(13)} The set of irrational numbers The set of real numbers
What set does 7.5 belong to?
To any set that contains it! It belongs to {7.5}, or {7.5, sqrt(2), pi, -3/7}, or {7.5, bananas, France, cold} or multiples of 2.5, or halves of odd integers, or rational numbers, or real numbers, or complex numbers, etc.
