Secondary Live Problems

Each time you visit the NRICH site there will be some activities which are 'live'. That means we are inviting you to send us your solutions and we will publish a selection of them, along with your name and your school's name. If you'd like to know more about what we're looking for, read this short article.

The last day for sending in solutions to these live problems is Monday 11th July.

Starting to Explore Four Consecutive Numberslive

Age 11 to 16
Challenge Level

Continuing to Explore Four Consecutive Numberslive

Age 14 to 16
Challenge Level

Simultaneous Equations Sudokulive

Age 11 to 18
Challenge Level

Solve the equations to identify the clue numbers in this Sudoku problem.

A Change in Codelive

Age 14 to 16
Challenge Level

Can you find the percentage increase if the results appear in code?

Symmetricalitylive

Age 14 to 18
Challenge Level

Five equations and five unknowns. Is there an easy way to find the unknown values?

Always Twolive

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 Equationslive

Age 16 to 18
Challenge Level

What do you get when you raise a quadratic to the power of a quadratic?

Agile Algebralive

Age 16 to 18
Challenge Level

Observe symmetries and engage the power of substitution to solve complicated equations.

Overturning Fracsumlive

Age 16 to 18
Challenge Level

Can you solve the system of equations to find the values of x, y and z?

Secondary Toughnutslive

Age 11 to 18
Challenge Level

These secondary problems have not yet been solved. Can you be the first?