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Symmetry, Substitutions and Surprises
In this feature you will be challenged to exploit the symmetries of a range of equations to derive elegant and efficient solutions to problems which, at first sight, might seem very difficult.
Simultaneous Equations Sudoku
Age 11 to 18
Challenge Level 
Solve the equations to identify the clue numbers in this Sudoku problem.
Symmetricality
Age 14 to 18
Challenge Level
Five equations and five unknowns. Is there an easy way to find the unknown values?
Always Two
Age 14 to 18
Challenge Level
Find all the triples of numbers a, b, c such that each one of them plus the product of the other two is always 2.
Mega Quadratic Equations
Age 14 to 18
Challenge Level
What do you get when you raise a quadratic to the power of a quadratic?
Agile Algebra
Age 16 to 18
Challenge Level
Observe symmetries and engage the power of substitution to solve complicated equations.
Overturning Fracsum
Age 16 to 18
Challenge Level
Can you solve the system of equations to find the values of x, y and z?
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