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3rdhexagonalnumber
<-- Enter hexagonal number statement
Calculate hexagonal number 3
The formula for hexagonal number n is as follows
H
n
= n(2n - 1)
Given n = 3, we have:
H
n
= 3(2(3) - 1)
H
n
= 3(6 - 1)
H
n
= 3(5)
H
3
=
15
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