Archive · Friday, October 16, 2026

Hunch #16

For each question, give a low and a high you are 80% sure the answer sits between. Tighter brackets score more; a miss scores zero. You can type 2 million, 3e9, 1.5k or 45%.

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DoublingQuestion 1 of 8

There is 1 paper clip on day 1, and the number doubles every day (2 on day 2, 4 on day 3). How many paper clips are there on day 43?

Low High paper clips

FoldingQuestion 2 of 8

A sheet of paper 0.1 mm thick is folded in half 21 times (pretend that is possible: ordinary paper is hard to fold more than 7 or 8 times). How thick is the folded stack, in metres?

Low High metres

ClockworkQuestion 3 of 8

How many minutes are there in 46 years of 365 days?

Low High minutes

CalendarQuestion 4 of 8

How many days after February 16, 1878 is January 22, 2008?

Low High days

BirthdaysQuestion 5 of 8

29 people are in a room. Counting all 365 birthdays as equally likely (ignore February 29), what is the chance, in percent, that at least two of them share a birthday?

Low High percent

Head mathsQuestion 6 of 8

Without a calculator: what is 783 × 2,937?

Low High

OrdersQuestion 7 of 8

A team of 5 is picked from a club of 24 members. How many different teams are possible (order does not matter)?

Low High teams

PackingQuestion 8 of 8

How many 1-inch cubes fit, packed perfectly with no gaps, in a box 2 ft long, 2 ft wide and 4 ft tall?

Low High cubes

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