Indices

  • Small tomato seedlings in pink pots.
    problem

    Maundy Money

    Age
    11 to 14
    Challenge level
    2 out of 3

    How much money did the Queen give away in pence as a power of 2?

  • Small tomato seedlings in pink pots.
    problem

    Age of Augustus

    Age
    11 to 14
    Challenge level
    2 out of 3

    The English mathematician Augustus de Morgan has given his age in algebraic terms. Can you work out when he was born?

  • A Biggy
    problem

    A Biggy

    Age
    14 to 16
    Challenge level
    1 out of 3

    Find the smallest positive integer N such that N/2 is a perfect cube, N/3 is a perfect fifth power and N/5 is a perfect seventh power.

  • eNRICHing experience
    problem

    eNRICHing Experience

    Age
    14 to 16
    Challenge level
    1 out of 3

    Find the five distinct digits N, R, I, C and H in the following nomogram

  • Multiplication Magic
    problem

    Multiplication Magic

    Age
    14 to 16
    Challenge level
    1 out of 3

    Given any 3 digit number you can use the given digits and name another number which is divisible by 37 (e.g. given 628 you say 628371 is divisible by 37 because you know that 6+3 = 2+7 = 8+1 = 9). The question asks you to explain the trick.

  • Small tomato seedlings in pink pots.
    problem

    Powerful Zeros

    Age
    14 to 16
    Challenge level
    2 out of 3

    How many zeros are there at the end of $3^4 \times 4^5 \times 5^6$?

  • Small tomato seedlings in pink pots.
    problem

    Largest Expression

    Age
    14 to 16
    Challenge level
    2 out of 3

    Which of these five algebraic expressions is largest, given $x$ is between 0 and 1?

  • Really Mr. Bond
    problem

    Really Mr. Bond

    Age
    14 to 16
    Challenge level
    3 out of 3

    Can you explain what's happening with these numbers?

  • Big, Bigger, Biggest
    problem

    Big, Bigger, Biggest

    Age
    16 to 18
    Challenge level
    1 out of 3

    Which is the biggest and which the smallest of $2000^{2002}, 2001^{2001} \text{and } 2002^{2000}$?

  • Staircase
    problem

    Staircase

    Age
    16 to 18
    Challenge level
    1 out of 3

    Solving the equation x^3 = 3 is easy but what about solving equations with a 'staircase' of powers?