Other equations

There are 22 NRICH Mathematical resources connected to Other equations
Golden Ratio
problem

Golden ratio

Age
16 to 18
Challenge level
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Solve an equation involving the Golden Ratio phi where the unknown occurs as a power of phi.
N is a Number
problem

N is a number

Age
11 to 14
Challenge level
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N people visit their friends staying N kilometres along the coast. Some walk along the cliff path at N km an hour, the rest go by car. How long is the road?