Underground Metro Puzzle: Uncover the Hidden Clue

This lateral thinking brain teaser will challenge your critical thinking and problem-solving skills. Can you uncover the hidden clue in this puzzle to solve this underground metro puzzle?

Underground Metro Puzzle: Uncover the Hidden Clue

The answer can be viewed by clicking on the button. Please do give your best try before looking at the answer.

When a train arrives at the metro station then there are many people in groups simultaneously leaving the station. However, people don't come down to the station in groups. This is the reason one will find more escalators going up than the number of escalators coming down.

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