Answer:
1. {1, 2, 3, 4, 5, 6, 7, 9}
2. {12, 13, 14, 15, 18, 19, 20}
3. {0, 1, 2, 3, 4, 5, 6, 7, 8, 10, 13, 14, 15}
Write mo din yung nasa photo parang ganito,
1. {1, 2, 3, 4, 5, 6, 7, 9}
(yung number 1 sa picture),
tapos same goes to the other numbers.
EXPLANTATION:
The U is called "Union of set" the best way to remember what it is, is to remember this:
Union of set -
Is wrote as AUB (combining/mixing elements)
Example:
Set B = {1, 3, 4, 5}
Set C = {2, 3, 5}
I-combine mo yung elements na nasa both sets,
= {1, 2, 3, 4, 5} (Di mo kailangan i-repeat yung number na both meron sila sa set)
IF MERON K NA HINDI NAIINTINDIHAN OR QUESTIONS LMK