Fermi
·
Concept Library
·
Courses
·
Books
·
Problems
·
Simulations
·
Math Wiki
·
High School
Fermi
›
Problems
Mathematics
Mathematics
Problem
The 4th term of an AP is 7 and the 9th term is 27. What is the common difference
d
d
d
? a)
5
5
5
b)
4
4
4
c)
3
3
3
d)
2
2
2
Browse the problem library