- Data Structure
- Networking
- RDBMS
- Operating System
- Java
- MS Excel
- iOS
- HTML
- CSS
- Android
- Python
- C Programming
- C++
- C#
- MongoDB
- MySQL
- Javascript
- PHP
- Physics
- Chemistry
- Biology
- Mathematics
- English
- Economics
- Psychology
- Social Studies
- Fashion Studies
- Legal Studies
- Selected Reading
- UPSC IAS Exams Notes
- Developer's Best Practices
- Questions and Answers
- Effective Resume Writing
- HR Interview Questions
- Computer Glossary
- Who is Who
Which of the following is not a rational number?
a) 3.4
b) $\frac{2}{5}$
c) 1.010010001
d) 1.732
Given:
a) 3.4
b) $\frac{2}{5}$
c) 1.010010001
d) 1.732
To do: Find which if the given numbers are not rational.
Answer:
a) 3.4
A terminating decimal.
So, it is a rational number.
b) $\frac{2}{5}$
$\frac{2}{5}$ = 0.4,
A terminating decimal.
So, it is a rational number.
c) 1.010010001...
If it is a non-terminating non-repeating decimal then it is
NOT a rational number
d) 1.732
A terminating decimal.
So, it is a rational number.
Advertisements