Topic : Counting-Number of Set Elements
from: category_eng
1.

2.

3.
n(K and R)=?
n(K)=12, n(R)= 8
n(K or R)=17
4.
(1)n(X and Y )=0.2 * n(X) (2)n(X and Y )=0.3 * n(Y) If you combine those two.. surely, x is bigger
5.
n( F or S ) =
6.
This problem is something wrong. n(M and N) =?
7.

8.
No idea for total.
9.

10.
Use a vandiagram
11.
use vendiagram
12.
Use a vendiagram
1.
2. e
3. C
n(K and R)=?
n(K)=12, n(R)= 8
n(K or R)=17
4. C
(1)n(X and Y )=0.2 * n(X) (2)n(X and Y )=0.3 * n(Y) If you combine those two.. surely, x is bigger
5. D
n( F or S ) =
6. A
This problem is something wrong. n(M and N) =?
7. D
8. E
No idea for total.
9. D
10. E
Use a vandiagram
11. D
use vendiagram
12. C
Use a vendiagram