With math, you usually have to solve the problem, but. This method is quite simple when it least starts with a letter L, so the symbol that most resembles an L is the one that means “less than”. When working with inequalities, keep in mind that, in general, they ask you to resolve a relationship or to identify which symbol is appropriate, rather than asking you to solve a single number. You don't have to end up with two numbers on either side of an equal sign to get it right, the answer just has to be true. We can say, broadly speaking, that “it means that the word to which it is attached refers to a specific and individual object.
When someone says “I have the apple”, they are referring to a specific apple, not just “an apple”, an old apple, or “apples” in general.