Basics of computing

Question

What is Armstrongs number

Answer 1

Armstrong's number is a number that is equal to the sum of cubes of its digits.

An example:

153 = (1*1*1)+(5*5*5)+(3*3*3)  

where:  

(1*1*1)=1  

(5*5*5)=125  

(3*3*3)=27  

So:  

1+125+27=153