To any set that contains it!
It belongs to {1.5},
or {1.5, sqrt(2), pi, -3/7},
or all whole numbers to 1 decimal place between 1 and 53,
or multiples of 0.5,
or rational numbers,
or real numbers,
or complex numbers,
etc.
The cardinal number of a set is the number of elements in the set. Example: the cardinal number of the set {6, prune, 675, biscuit, London} is 5, since the set contains five elements. If a set contains repeated elements, they should only be counted once. Example: the cardinal number of the set {6, 7, 3, 4, 4, 7} is 4 (not 6) since the fours and sevens are only counted once.
To any set that contains it! It belongs to {-15}, or {sqrt(2), -15, pi, -3/7}, or all whole numbers between -43 and 53, or multiples of 5, or composite numbers, or integers, or rational numbers, or real numbers, or complex numbers, etc.
Name of the set which contains all elements is UNIVERSAL SET. It is usually represented by (U)
yes,number system contains digits..
That is called the set of "integers".
Yes, 15 is a whole number.
The set {15}.
The set {1, pi, -3.9} is one such set.
It is a set which contains a finite number of elements.
Opposites
No. Zero is a number, so the "set of zero" contains one element. The empty set, also known as the null set, contains no elements.
The set of all rational numbers.If the set contains all of them then no other set can contain any more rational numbers.
It's called an infinite set.
15 because there are more 15s in the set of number than any other number in the set "{12,13,13,15,15,15,17}."
I assume you mean a set that contains a single whole number. Yes, you can have sets with zero elements, one element, two elements, etc.; so a set which contains a single number is perfectly valid.
You can't really compare that, since zero is not a set. The null set (empty set), which can be written as {}, is a set with zero elements. A set that only contains the number zero, in symbols {0}, contains one element. It is not the same as the empty set.
Atom of element phosphorus.if there are 15 protons then definitely the atoñc number is 15 and phosphorus seem to have atomic number 15