Mathematics for IGCSE & O level - Sets (Section 1 - No. 15)
The notation {x | x > 5} represents which of the following?
The set of all numbers less than 5.
The set of all numbers equal to 5.
The set of all numbers greater than 5.
The set of the number 5.
解释
This notation represents the set of all x where x is greater than 5.