Question

Jika P ={x|x-3<20,x∈ himpunan bilangan prima} maka n(P)=....
A.13
B.11
C.9
D.8

Answer 1

Himpunan bil prima= 2,3,5,7,11,...
syarat x-3 <20
2-3=-1
3-3=0
5-3=2
7-3=4
11-3=8
13-3=10
17-3=14
19-3=16
maka P={2,3,5,7,11,13,17,19}
n(p)=8