Fermi
·
Concept Library
·
Courses
·
Books
·
Problems
·
Simulations
·
Math Wiki
·
High School
Fermi
›
Problems
Mathematics
Mathematics
Problem
If the 2nd, 3rd and 4th terms in the expansion of
(
x
+
y
)
n
(x+y)^n
(
x
+
y
)
n
are 240, 720 and 1080 respectively, find
x
,
y
x, y
x
,
y
and
n
n
n
.
Browse the problem library