Four of these clues are needed to find the chosen number on this
grid and four are true but do nothing to help in finding the
number. Can you sort out the clues and find the number?
Use your logical reasoning to work out how many cows and how many
sheep there are in each field.
Are all the possible combinations of two shapes included in this
set of 27 cards? How do you know?
Use your logical-thinking skills to deduce how much Dan's crisps and ice-cream cost altogether.
Using the statements, can you work out how many of each type of
rabbit there are in these pens?
The flow chart requires two numbers, M and N. Select several values
for M and try to establish what the flow chart does.
Can you set the logic gates so that the number of bulbs which are
on is the same as the number of switches which are on?
Four friends must cross a bridge. How can they all cross it in just
A man has 5 coins in his pocket. Given the clues, can you work out
what the coins are?
Investigate how logic gates work in circuits.
Using balancing scales what is the least number of weights needed
to weigh all integer masses from 1 to 1000? Placing some of the
weights in the same pan as the object how many are needed?
Rhea compared the triangles very thoroughly and noticed that they
have the same areas.
Go to last month's problems to see more solutions.
Most stories about the history of maths seem to be about men. Here are some famous women who contributed to the development of modern maths and prepared the way for generations of female mathematicians.