Brainteasers: December 2007

Compiled by Julianne Scibetta-Messia

Thanks to everyone who joined in this round of fun, especially:
Mon Nasser, Jessica Nettles, and Karey Pharris!!

Solutions to November’s Riddlers

E. The letters represent the initials of continents.

For two children in general there are four equally likely events: boy-boy, boy-girl, girl-boy, girl-girl. Since boy-boy is ruled out, the probability of two girls is one third (or about 33%).

Once. After that you’re subtracting 3 from 36, 3 from 33, and so on.

A decimal point.

Day. Daylight, daybreak, daytime.


Don’t let the holiday cheer steer you clear of the challenges here!

Farmer Brown keeps ducks. He puts two ducks in front of a duck, two ducks behind a duck, and one duck in the middle. How many ducks does he have?

Two days ago Charlie was 20. Next year he will be 23. How can this be possible?

A sphere has three, a circle has two, but a point doesn’t have any….what?

For those of you who still have your vinyl records at home: How many grooves are there on a long-playing record, 30cm in diaeter, with a 10cm label in the center and a 1cm margin on the outside?

What is this famous expression?
100S549
A3100F
4E621T00
28Y2167

Send your best guesses to: messiaj@acp.edu

Happy Holidays and Happy New Year!