Question

What is the meaning of this sign in mathematics :

Answer 1

Answer:

This symbol < means less than, for example 2 < 4 means that 2 is less than 4. This symbol > means greater than, for example 4 > 2. ≤ ≥ These symbols mean 'less than or equal to' and 'greater than or equal to' and are commonly used in algebra. In computer applications <= and >= are used.

Answer 2

I’m not sure if I understood correctly but I think this means the absolute value
Which means the distance from zero

For example
|3|=3
|-3|=3