Question

Which of the following are rational numbers?
5.48
78.541
97
42.111...

Answer 1

5.48, 78.541 and 97

Explanation:

A rational number by definition refers to a number that is in the form of k/m and in which k and m are integers and m is not equal to 0.

Let me give you some examples:

• 1/3
• 2/4
• 1/5
• 9/3

From our question,

• 5.48 = 137/25 hence rational number
• 78.541 = 78541/1000; rational
• 97 = 97/1; rational
• 42.111..... = 4211111*/100000: irrational number. It is recurring hence not a rational number.

Therefore 5.48, 78.541 and 97 are rational numbers