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Chisinau City MO
1949-56 Chisinau City MO
9
Chisinau MO p9 1949-56 VIII-IX n(n^2 + 5) is divisible by 6
Chisinau MO p9 1949-56 VIII-IX n(n^2 + 5) is divisible by 6
Source:
March 15, 2021
number theory
divisible
Problem Statement
Prove that for any integer
n
n
n
the number
n
(
n
2
+
5
)
n (n^2 + 5)
n
(
n
2
+
5
)
is divisible by
6
6
6
.
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