Expanding Zeros
Weekly Problem 22 - 2008
The following sequence continues indefinitely... Which of these integers is a multiple of 81?
Weekly Problem 22 - 2008
The following sequence continues indefinitely... Which of these integers is a multiple of 81?
A male punky fish has 9 stripes and a female punky fish has 8 stripes. I count 86 stripes on the fish in my tank. What is the ratio of male fish to female fish?
Each letter stands for a different digit, and S is non-zero. Which letter has the lowest value?
In this addition each letter stands for a different digit, with S standing for 3. What is the value of YxO?
Weighing the baby at the clinic was a problem. Can you work out the weight of the baby from the information given?
Quince, quonce and quance are three types of fruit. Can you work out the order of heaviness of the fruits?
Weekly Problem 18 - 2007
A regular pentagon together with three sides of a regular hexagon form a cradle. What is the size of one of the angles?
Weekly Problem 44 - 2010
Extend two of the sides of a nonagon to form an angle. How large is this acute angle?
Weekly Problem 50 - 2012
The diagram shows a regular dodecagon. What is the size of the marked angle?