A tourist is in a department store that has 5 floors above ground and 4 floors below ground (numbered -1 to -4). The tourist starts on the top floor (Floor 5) and wants to go to the bottom floor (Floo

The top level is Floor 5.
The bottom level is Floor -4 (4 floors below ground level).
The tourist starts at Floor 5 and travels to Floor -4.

The tourist stops every 2 floors while moving downwards from Floor 5.

• From Floor 5, the first stop is at Floor $5 - 2 = 3$.
• From Floor 3, the second stop is at Floor $3 - 2 = 1$.
• From Floor 1, the third stop is at Floor $1 - 2 = -1$.
• From Floor -1, the fourth stop is at Floor $-1 - 2 = -3$. The next stop would be at Floor $-3 - 2 = -5$. However, the lowest floor in the store is Floor -4. Therefore, the lift will travel directly from Floor -3 to Floor -4 without an additional intermediate stop. The destination (Floor -4) is the end of the journey, not an intermediate stop for "looking around briefly".

The stops made are at Floor 3, Floor 1, Floor -1, and Floor -3.
This is a total of 4 stops.

The tourist will make $\mathbf{4 \text{ stops}}$.