The Fibonacci sequence appears in many phenomena in nature.

The aquifer in this area provides a very abundant water source.

He is good at solving algebraic equations.

He is a world-famous mathematician.

A mixed number is a number that has an integer part and a fraction part.

Hina is the shortest in her class.

Please check the number of photos.

Combinatorics is a branch of mathematics that studies combinations of things.

Combinatorics is a branch of mathematics dealing with issues of order and choice.

Combinatorics is a branch of mathematics that studies combinations of things.