Archive · Thursday, October 15, 2026

Hunch #15

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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BirthdaysQuestion 1 of 8

34 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

ClockworkQuestion 2 of 8

How many minutes are there in 8 years of 365 days?

Low High minutes

PackingQuestion 3 of 8

How many 1-inch cubes fit, packed perfectly with no gaps, in a box 7 ft long, 8 ft wide and 5 ft tall?

Low High cubes

CalendarQuestion 4 of 8

How many days after January 20, 1837 is June 10, 1926?

Low High days

DiceQuestion 5 of 8

You roll a pair of fair dice 74 times. What is the chance, in percent, of at least one double six?

Low High percent

FoldingQuestion 6 of 8

A sheet of paper 0.1 mm thick is folded in half 23 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

DoublingQuestion 7 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 38?

Low High pennies

Head mathsQuestion 8 of 8

Without a calculator: what is 839 × 9,253?

Low High

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