From the archive
Thursday, 20 August 2026
The lookup that doesn't need an exact hit — just the bracket a number falls into.
You run fulfillment for an online furniture-fittings shop. Shipping is priced in weight brackets, and the rate table only lists where each bracket starts — there is no row for every possible weight. Work out the shipping cost for each order in column C.
A new exercise every morning, plus every day that came before it — a back catalogue that grows by one a day, whether or not you were here for it.
The last 14 days. Today's challenge is free while your streak is alive; Pro opens every past day too.