Problem 813. Multiply 2 numbers

Created by Aurelien Queffurust

Solve Later

Very easy, you just have to multiply 2 numbers but you cannot use the following signs (*, /, - ,^) ,mtimes , times, cross, prod, cumprod , dec2bin, int2str and num2str functions. Will you take up the challenge?!

Example : x= 3; y= 2;

output = 6 since 3*2 = 6 :)

Solve

Solution Stats

2971 Solutions
341 Solvers

Last Solution submitted on Mar 09, 2025

Last 200 Solutions

Problem Comments

4 Comments

4 Comments

Show 1 older comment

Aurelien Queffurust on 9 Jul 2012

As Richard made me notice by email, tests 5 and 6 (using randi and non-integer) were not enable. As I have rescored all solutions, some previous solutions which passed the test, do not pass it anymore.

James on 9 Jul 2012

Can you please set a tolerance for the submitted answers? Using exp(log(x)+log(y)) fails nearly all possibilities for test case 5, with the biggest error being roughly 2.5e-11.

Ilias Patelakis on 24 Oct 2017

Nice one. It would be more challenging to add a test case where both function arguments are decimal numbers. :)

Jiahang Li on 4 Feb 2018

You can try adding, and something wonderful happens.

Solution Comments

Show comments

Problem Recent Solvers341

Problem Tags

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Problem 813. Multiply 2 numbers

Solution Stats

Last 200 Solutions

Problem Comments

Solution Comments

Problem Recent Solvers341

Suggested Problems

More from this Author30

Problem Tags

Community Treasure Hunt

Problem 813. Multiply 2 numbers

Solution Stats

Last 200 Solutions

Problem Comments

Solution Comments

Problem Recent Solvers341

Suggested Problems

More from this Author30

Problem Tags

Community Treasure Hunt

Players