How many integers between 1 and 1200 are NOT multiples of any of the numbers 2, 3 or 5?
How many dry days did Aisha have on her holiday?
How many students are in the maths club and the science club?
This challenge extends the Plants investigation so now four or more children are involved.
This challenging activity involves finding different ways to distribute fifteen items among four sets, when the sets must include three, four, five and six items.
Problem 1 was solved by 70% of the pupils. Problem 2 was solved by 60% of them. Can you work out how many pupils took the exam?