The number 55 belongs to several sets of numbers, specifically: a) Natural numbers, b) Whole numbers, and c) Integers.
Here’s why:
- Natural Numbers: Natural numbers are the set of positive counting numbers starting from 1. Since 55 is a positive number, it qualifies as a natural number.
- Whole Numbers: Whole numbers include all natural numbers along with zero. Since 55 is a natural number, it is also classified as a whole number.
- Integers: Integers encompass all whole numbers and their negative counterparts. Thus, 55, being a whole number, is also an integer.
However, 55 does not belong to the set of irrational numbers. Irrational numbers are those that cannot be expressed as a fraction of two integers, such as the square root of 2 or pi. Since 55 can be expressed as the fraction 55/1, it is definitely not irrational.
In summary, 55 is a member of the natural, whole, and integer sets, but not of the irrational numbers.