\leThe symbol \le is used to denote 'less than or equal to' in mathematical expressions. It is a relational operator that indicates one quantity is either less than or exactly equal to another.
x is less than or equal to y.
x \le yThe sum of squares of a and b is less than or equal to the square of c.
a^2 + b^2 \le c^2The variable n is less than or equal to 10.
n \le 10