- Trending Categories
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
Express each of the following numbers as the sum of three odd primes:
(a) 21
(b) 31
(c) 53
(d) 61
To do :
We have to express the given numbers as the sum of three odd primes.
Solution :
First few odd prime numbers are 3, 5, 7, 9, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89, 97.
(a) Given number is 21.
$21=3+5+13$
21 expressed as the sum of three odd prime numbers is $3+5+13$.
(b) Given number is 31.
$31=3+5+23$
31 expressed as the sum of three odd prime numbers is $3+5+23$.
(c) Given number is 53.
$53=13+17+23$
53 expressed as the sum of three odd prime numbers is $13+17+23$.
(d) Given number is 61.
$61=7+13+41$
61 expressed as the sum of three odd prime numbers is $7+13+41$.
Advertisements