Challenge of the Week: The Diya Vendor's Tricky Count

Every festival season, the little lane behind the temple turns into a sea of flickering clay lamps.

Meena runs a diya stall at the festival market.

- When she arranges them in rows of 4, exactly 3 lamps are left over.

No matter how she stacks them, she always ends up just one lamp short of a perfect block.

How many diyas does Meena have on her tray?

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