The letters of the word ABACUS have been arranged in the shape of a
triangle. How many different ways can you find to read the word
ABACUS from this triangular pattern?
Five numbers added together in pairs produce: 0, 2, 4, 4, 6, 8, 9, 11, 13, 15 What are the five numbers?
Many numbers can be expressed as the sum of two or more consecutive integers. For example, 15=7+8 and 10=1+2+3+4. Can you say which numbers can be expressed in this way?
Patrick from Woodbridge School gave a very
clear explanation of how to work out which weight is heavier, in
just two weighings of the balance, when you have been given 9
weights and you are told that one is slightly heavier than the
Daniel from Barclay School then built on this
strategy to work out which weight is heavier in just three
weighings of the balance when you have been given 27 weights and
been told that one is slightly heavier than the rest: