This month’s brain teaser is not so bad! Yes, it requires thought (reasoning!), but it is doable. Give it a try! You have a three gallon and a five gallon measuring device. You can fill the containers with water as many times as you like or pour water from...
There are 1000 lockers in a high school with 1000 students. The problem begins with the first student opening all 1000 lockers; next the second student closes lockers 2,4,6,8,10 and so on to locker 1000; the third student changes the state (opens lockers that are...
This month’s brain teaser is on the “easier” side (though it is still a brain teaser: hint, hint). As in previous newsletters, it’s also typical of the type of questions you see on standardized tests, especially the GMAT and GRE: If 4 hens can lay 4 eggs in...
Club X has more than 10 but fewer than 40 members. Sometimes the members sit at tables with 3 members at one table and 4 members at each of the other tables, and sometimes they sit at tables with 3 members at one table and 5 members at each of the other tables. If...
A census taker approaches a house and asks the woman who answers the door “How many children do you have, and what are their ages?” The woman says, “I have three children; the product of their ages is 36, and the sum of their ages is equal to the...
