Archive · Friday, October 30, 2026

Hunch #30

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%.

Archive days are a Network Pass feature: $1.95 a month, $19.50 a year, or a $1.00 Day Pass · Free during preview. They never count on league boards.

InterestQuestion 1 of 8

You put $250 in an account that pays 6% a year, added once a year, and never touch it. What is it worth after 13 years, in dollars?

Low High dollars

FoldingQuestion 2 of 8

A sheet of paper 0.1 mm thick is folded in half 13 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 3 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 38?

Low High paper clips

Head mathsQuestion 4 of 8

Without a calculator: what is 720 × 2,697?

Low High

OrdersQuestion 5 of 8

A team of 3 is picked from a club of 59 members. How many different teams are possible (order does not matter)?

Low High teams

ClockworkQuestion 6 of 8

How many seconds are there in 124 hours?

Low High seconds

BirthdaysQuestion 7 of 8

22 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

CalendarQuestion 8 of 8

How many days after October 6, 1868 is March 1, 1915?

Low High days

No Hunch Book on this browser: you can keep the score in a new one after you see it.