Answer:
Step-by-step explanation:
a =3 ;r = 1/2
first term = 3
second term = 3*1/2 = 3/2
third term = 3/2 * 1/2 = 3/4
Fourth term = 3/4*1/2 = 3/8
Fifth term = 3/8 * 1/2 = 3/16
GP is: 3,3/2,3/4,3/8,3/16......
It is 20
39+1
38+2
37+3
36+4
35+5
<span>Until you get to 20+20</span>
Answer:
false
Step-by-step explanation:
60-12-18-2-8=20
=48-18-2-8
=30-2-8
=28-8
=20
So, 20 students don't take either of these subjects.