Fermi
·
Concept Library
·
Courses
·
Books
·
Problems
·
Simulations
·
Math Wiki
·
High School
Fermi
›
Problems
Mathematics
Mathematics
Problem
In a geometric progression, the 5th term is
81
81
81
and the ratio of the 3rd term to the 9th term is
1
:
27
1:27
1
:
27
. What is the first term? a)
6
6
6
b)
9
9
9
c)
27
27
27
d)
1
1
1
Browse the problem library