Powers and roots

There are 62 NRICH Mathematical resources connected to Powers and roots
How Many Solutions?
problem
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How many solutions?

Age
16 to 18
Challenge level
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Find all the solutions to the this equation.
Number rules - OK
problem
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Number rules - ok

Age
14 to 16
Challenge level
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Can you produce convincing arguments that a selection of statements about numbers are true?
Magic potting sheds
problem
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Magic potting sheds

Age
11 to 16
Challenge level
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Mr McGregor has a magic potting shed. Overnight, the number of plants in it doubles. He'd like to put the same number of plants in each of three gardens, planting one garden each day. Can he do it?
Fit for photocopying
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Fit for photocopying

Age
14 to 16
Challenge level
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Explore the relationships between different paper sizes.
Root to Poly
problem
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Root to poly

Age
14 to 16
Challenge level
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Find the polynomial p(x) with integer coefficients such that one solution of the equation p(x)=0 is $1+\sqrt 2+\sqrt 3$.
More Magic Potting sheds
problem
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More magic potting sheds

Age
11 to 16
Challenge level
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The number of plants in Mr McGregor's magic potting shed increases overnight. He'd like to put the same number of plants in each of his gardens, planting one garden each day. How can he do it?
Cubes within Cubes
problem
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Cubes within cubes

Age
7 to 14
Challenge level
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We start with one yellow cube and build around it to make a 3x3x3 cube with red cubes. Then we build around that red cube with blue cubes and so on. How many cubes of each colour have we used?

Equal Temperament
problem
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Equal temperament

Age
14 to 16
Challenge level
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The scale on a piano does something clever : the ratio (interval) between any adjacent points on the scale is equal. If you play any note, twelve points higher will be exactly an octave on.
Sept 03
problem
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Sept 03

Age
11 to 14
Challenge level
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What is the last digit of the number 1 / 5^903 ?