Answer:
1/12
Step-by-step explanation:
Answer:
1/108
Step-by-step explanation:
One of the boys and one of the girls are siblings
1/9 × 1/12
1/108
Answer:
r = 7
Step-by-step explanation:
The common ratio r of a geometric sequence is
r =
=
, that is
r =
=
= 7