Tuesday, May 15, 2012

Thursday, May 3, 2012

challenge 10

Tom went on a science-and-math quiz show. The science questions were worth 3 points and the math questions were worth 1 point. Tom answered a total of 5 questions and earned 9 points. How many questions did he answer in each category?

Tuesday, April 24, 2012

Challenge 9

The Headmaster went on holiday to Santander.
During his holidays the following statements were right:
  • It rained seven times in the morning or in the aftenoon.
  • When it rained in the afternoon, the morning was sunny.
  • There were exactly five sunny afternnons and six sunny mornings.
How many days was the Headmaster on holidays?