Describe all the sets and subsets the number −25 belongs to.(1 point)

1 answer

The number \(-25\) belongs to several sets and subsets in mathematics. Here are the main categories:

  1. Real Numbers (\(\mathbb{R}\)): \(-25\) is a real number, so it belongs to the set of all real numbers.

  2. Rational Numbers (\(\mathbb{Q}\)): \(-25\) is a rational number because it can be expressed as the fraction \(-25/1\).

  3. Integers (\(\mathbb{Z}\)): \(-25\) is an integer, which means it belongs to the set of all integers, which includes positive and negative whole numbers, as well as zero.

  4. Negative Integers: \(-25\) is specifically a negative integer, so it belongs to the subset of negative integers.

  5. Whole Numbers: \(-25\) does not belong to the set of whole numbers since they include only non-negative integers (0, 1, 2, ...).

  6. Natural Numbers: \(-25\) does not belong to the set of natural numbers as they are the positive integers (1, 2, 3, ...).

In summary, the number \(-25\) belongs to the following sets and subsets:

  • Real Numbers \((\mathbb{R})\)
  • Rational Numbers \((\mathbb{Q})\)
  • Integers \((\mathbb{Z})\)
  • Negative Integers (subset of \(\mathbb{Z}\))