Is there a temperature at which Celsius and Fahrenheit readings are the same?
Weekly Problem 52 - 2009
How did Jenny figure out that Tom's cards added to an even number?
What is the largest number of digits that could be erased from this 1000-digit number, to get a surprising result?
How many more miles must the car travel before the numbers on the milometer and the trip meter contain the same digits in the same order?
Can you see how this picture illustrates the formula for the sum of the first six cube numbers?
Can you use the numbers on the dice to reach your end of the number line before your partner beats you?
Draw some angles inside a rectangle. What do you notice? Can you prove it?
