Question

how we can know that a number is a rational number​

Answer 1

Answer:

"To decide if an integer is a rational number, we try to write it as a ratio of two integers. An easy way to do this is to write it as a fraction with denominator one. Since any integer can be written as the ratio of two integers, all integers are rational numbers."

Answer 2

Answer:

if the given term can be expressed in the form of p/q where q is not equal to 0 than the term is a rational number.