Problem 44227. Divisible by 21
Write a function to determine if a number is divisible by 21.
Solution Stats
Problem Comments
-
4 Comments
Divisible by 21 or by 7 ?
What is the name of the function that you want ?
divisible_by_21.m or divisible_by_7.m (you test both)
Why do you forbid all these functions ?
A lot of why ...
The problem maker in this case (no pun intended) simply copied the test case from my Divisible by 7 problem and made some edits, but obviously not enough to make it solvable. I've greatly simplified the test suite for this problem so that it is now solvable.
Thanks Grant.
Solution Comments
Show commentsProblem Recent Solvers49
Suggested Problems
-
1223 Solvers
-
Sum of diagonal of a square matrix
1555 Solvers
-
Switch matrix to a column vector
341 Solvers
-
5069 Solvers
-
Solving Quadratic Equations (Version 1)
480 Solvers
More from this Author14
Problem Tags
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!