Daily puzzle · 2026-11-03 · Permutations

Mathbound Daily Puzzle — 2026-11-03 — Permutations Solution

Level 3

A frog starts at pad

0

and jumps

+1

+2

each move. Pad

15

is unsafe. How many jump sequences reach pad

18

without landing on pad

15

Answer: B

Key idea: Fibonacci with a zeroed forbidden state.

Set it up: DP with $F(15)=0$ .

Solution: $1220$ .

Mathbound Daily Puzzle — 2026-11-03 — Permutations Solution