In a Box
Chris and Jo put two red and four blue ribbons in a box. They each pick a ribbon from the box without looking. Jo wins if the two ribbons are the same colour. Is the game fair?
Chris and Jo put two red and four blue ribbons in a box. They each pick a ribbon from the box without looking. Jo wins if the two ribbons are the same colour. Is the game fair?
Can you find six numbers to go in the daisy from which you can make all the numbers from 1 to a number bigger than 25?
The computer has made a rectangle and will tell you the number of spots it uses in total. Can you find out where the rectangle is?
You have a set of the digits from 0 to 9. Can you arrange these in the five boxes to make two-digit numbers as close to the targets as possible?
In this investigation we are going to count the number of 1s, 2s, 3s etc in numbers. Can you predict what will happen?
Alison, Bernard and Charlie have been exploring sequences of odd and even numbers, which raise some intriguing questions...
If I print this page which shape will require the more yellow ink?