It was a clue, Jasmine realised that.
Never mind that the rest of her group were laughing and saying ridiculous things about that concrete block. It was a clue. Jasmine just knew it. But a clue to what?

A sphere. A rectangle. And a cube. It was a mathematical progression: One-six… and another six? But that couldn’t be right.

No. Because that cube was topped by four 3D-rhomboids. Pyramids, truncated. Four of those, each six-sided. So the clue must read 1-6-6-24.

Was it a date? 1st June 2024? Or maybe 1924? But why the two sixes? Or was the cube to be added to the rhomboids? That would make it 1-6-30.

1st June 2030?

And?

Maybe she needed another clue.