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Puzzle 201
Can you make this equation correct by moving exactly one matchstick?
Note: this puzzle is not interactive, and the matchsticks cannot be moved. The matchstick layouts for each digit are:
Puzzle 202
If a farmer buys chicken feed for £1.26 per tonne, pig feed for £2.74 per tonne and cattle feed for 78p per tonne. The feed can only be purchased by the tonne, and part tonnes aren't sold.
How much of each would he have if he had 100 tonnes for £100?
Puzzle 203
During the recent BrainBashers cipher convention, a binary code contest took place.
The contest consisted of a binary code transmission where the spaces between the letters were missing and there was no punctuation.
Each letter of the alphabet was translated into its binary equivalent based on its position in the alphabet. The resulting code was then blocked in groups of five digits.
a=1, b=10, c=11, d=100, e=101, f=110, g=111, h=1000, i=1001, j=1010, k=1011, l=1100, m=1101, n=1110, o=1111, p=10000, q=10001, r=10010, s=10011, t=10100, u=10101, v=10110, w=10111, x=11000, y=11001, z=11010
Can you find 10 countries?
10101 10000 11110
10111 11100 10110 011
10000 11111 10011 11010 0
11010 01011 11011 101
11100 01001 11001 01
11011 11110 01011 11111 11111
11010 11101 10100 11
10100 11111 11011 11
10000 11110 11101 1
11011 11111 10111 11111 10010 011
Puzzle 204
You have a very large number of generic plastic building blocks, each in the shape of a cube.
Think about how many cubes you would need in order to construct a giant cube with 16 small cubes along each edge.
If you were to then remove the outside layer, how many small cubes would you have removed?