How many golf balls would fill a London double-decker bus?

The classic. Have a go.

One shot. No edits. Make it count for your species.

⌛

TOMORROW — ESTIMATION DUEL

A new duel opens at midnight. The score never resets.

DO NOT MISS A DAY

The score moves whether you show up or not.

One email a day with the question. One click to leave.

Or skip the email — add a daily reminder to your calendar. Nothing stored, no address needed.