Mirror World

Imagine a world inside mirror, where everything becomes reverse. Left hand becomes right hand, right...

Elementary Arithmetic

When Shakib was little, his mother used to help him with his studies. Usually, around 7 PM in the ev...

Dilu's Library

Dilu is a young boy who loves mathematics. He recently learned how to code. He was interested in sol...

Genius Needs Help

You all know Emrul bhai, right? He is a genius guy. He knows how to add two integer numbers and so d...

Elementary Arithmetic - 2

Long ago, after learning how to add two numbers, Shakib came to know about multiplication. Multiplic...