Archive · Thursday, October 22, 2026

Hunch #22

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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FoldingQuestion 1 of 8

A sheet of paper 0.1 mm thick is folded in half 29 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

PackingQuestion 2 of 8

How many 1-inch cubes fit, packed perfectly with no gaps, in a box 2 ft long, 7 ft wide and 2 ft tall?

Low High cubes

OrdersQuestion 3 of 8

A team of 4 is picked from a club of 31 members. How many different teams are possible (order does not matter)?

Low High teams

DoublingQuestion 4 of 8

There is 1 penny on day 1, and the number doubles every day (2 on day 2, 4 on day 3). How many pennies are there on day 31?

Low High pennies

InterestQuestion 5 of 8

You put $100 in an account that pays 10% a year, added once a year, and never touch it. What is it worth after 21 years, in dollars?

Low High dollars

ClockworkQuestion 6 of 8

How many seconds are there in 16 days?

Low High seconds

Head mathsQuestion 7 of 8

What is 1 + 2 + 3 + … + 3,667 (every whole number up to 3,667 added together)?

Low High

CalendarQuestion 8 of 8

How many days after March 19, 1841 is November 16, 1964?

Low High days

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