Solve the problem.
The number sequence that corresponds to the figures above is 1, 6, 15, 28, . . . .These are the hexagonal numbers H1, H2, H3, H4, . . . .Use inductive reasoning to find a formula for the nth hexagonal number, Hn.
A. Hn = (n + 1)(2n - 1)
B. Hn = n(2n - 1)
C. Hn = 2n(n - 1)
D. Hn = 5n - 4
Answer: B
Mathematics
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