### There are 11 results

Broad Topics >

Sequences, Functions and Graphs > Maximise/minimise/optimise

##### Age 11 to 14 Challenge Level:

Christmas trees are planted in a rectangular array. Which is the taller tree, A or B?

##### Age 11 to 14 Challenge Level:

A manager of a forestry company has to decide which trees to plant. What strategy for planting and felling would you recommend to the manager in order to maximise the profit?

##### Age 14 to 16 Challenge Level:

Chris is enjoying a swim but needs to get back for lunch. If she can swim at 3 m/s and run at 7m/sec, how far along the bank should she land in order to get back as quickly as possible?

##### Age 14 to 16 Challenge Level:

A 10x10x10 cube is made from 27 2x2 cubes with corridors between
them. Find the shortest route from one corner to the opposite
corner.

##### Age 14 to 16 Challenge Level:

A ladder 3m long rests against a wall with one end a short distance from its base. Between the wall and the base of a ladder is a garden storage box 1m tall and 1m high. What is the maximum distance. . . .

##### Age 11 to 14 Challenge Level:

It is possible to dissect any square into smaller squares. What is
the minimum number of squares a 13 by 13 square can be dissected
into?

##### Age 14 to 16 Challenge Level:

There are 12 identical looking coins, one of which is a fake. The
counterfeit coin is of a different weight to the rest. What is the
minimum number of weighings needed to locate the fake coin?

##### Age 11 to 14 Challenge Level:

The graph represents a salesman’s area of activity with the
shops that the salesman must visit each day. What route around the
shops has the minimum total distance?

##### Age 14 to 16 Challenge Level:

Three fences of different lengths form three sides of an enclosure. What arrangement maximises the area?

##### Age 11 to 14 Challenge Level:

Which set of numbers that add to 10 have the largest product?

##### Age 11 to 14 Challenge Level:

Can you coach your rowing eight to win?