Fermi
·
Concept Library
·
Courses
·
Books
·
Problems
·
Simulations
·
Math Wiki
·
High School
Fermi
›
Problems
Mathematics
Mathematics
Problem
Which of the following gives the
n
n
n
-th term of an arithmetic progression whose first term is
a
a
a
and common difference
d
d
d
? a)
a
+
n
d
a+nd
a
+
n
d
b)
a
+
(
n
−
1
)
d
a+(n-1)d
a
+
(
n
−
1
)
d
c)
a
n
d
a\,n\,d
a
n
d
d)
a
−
(
n
−
1
)
d
a-(n-1)d
a
−
(
n
−
1
)
d
Browse the problem library