Square numbers

  • No Square Sums
    problem

    No Square Sums

    Age
    14 to 16
    Challenge level

    How many numbers do you need to remove to avoid making a perfect square?

  • Few and far between?
    problem

    Few and Far Between?

    Age
    16 to 18
    Challenge level

    Can you find some Pythagorean Triples where the two smaller numbers differ by 1?

Displaying 41 - 42 of 42