May 2012
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Birthday Leaves

As my birthday approaches I start to collect leaves – a little bizarre perhaps, but I enjoy it! On the first day of the month I
collect one leaf, on the second day I collect two and so on. So by my birthday I will have collected 300 leaves altogether. On which day of the month is [...]

Safe Sheep

A local farmer wants to keep his sheep safe. He has one mile of fence, with which to surround the sheep. Luckily there is a very straight river which he can also use. Obviously the farmer wants to fence off as much land as possible, what shape will the fenced off area be and how [...]

1 through 9

Using the digits 1, 2, 3, 4, 5, 6, 7, 8, 9, can you make 100?

You can use addition, subtraction, multiplication, and division, as well as brackets.

However, they must stay in the same order and you cannot join two digits to make another number, e.g. 1 and 2 cannot be used together as 12. The [...]

Numbers Crunch

What number comes next in this sequence:

1 4 1 5 9 2 ==?==

Special Numbers

When my kids were in school, they like all the other kids, had to learn their numbers. So each day for homework, they would bring home a list of numbers on a piece of paper, and they were asked to write out the letters that spelled that number, right next to each of them. So [...]

Tricky Number

Henry and Gretchen are going to play a game. Henry explains, “You and I will take turns saying numbers. The first person will say a number between 1 and 10. Then the other person will say a number that is at least 1 higher than that number, and at most 10 higher. We will keep [...]

Crafty Beaver

A Beaver’s tail weighs eight pounds. Its head weighs as much as the tail and one-half of the body combined, and the body weighs as much as the head and tail combined. What does the whole Beaver weigh?

Half Eight

What is half of 8, yet isn’t 2 x 2,
0 also isn’t what I’m looking for from you.

Mark Brothers

When Question Mark unlocked the door, he thought that he would see his wallet straight away. But Skid Mark (Question’s brother) decided to put the wallet in a safe. The combination is three 2-digit numbers which can be expressed like this:

xx-xx-xx

You are given the following clues to work out the combination:

The total of the three [...]

Pizza Party

If Giuseppe can make one pizza in 15 minutes and Gaetanno can make one pizza in 12 minutes. How many pizzas will they accumulate in a day if they work together?  Bearing in mind that Maximus takes 20 minutes to eat a pizza and he eats all day long!