(Choose 1 answer)
(See picture)
A. 15
B. 24
C. 21
D. None of the other choices is correct
E. 18
Finish
Suppose that the number of ways to solve an n-piece puzzle satisfies the recurrence relation
fn=fn-2+nfn-3
with the initial conditions
f₁ = 1, f22, f3 = 3.
How many ways are there to solve a 6-piece puzzle of this kind?
vat fini
El 48
