C-02-Q070mediumsingle_mcq
For any set , equals—
For any set , equals—
- a
- b
- c
- d
ব্যাখ্যা
The union of any set with itself contains exactly the same elements, since no new elements are added. By idempotency, .
For any set , equals—
The union of any set with itself contains exactly the same elements, since no new elements are added. By idempotency, .