Brain Teasers and Puzzles

Puzzle 69

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

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Puzzle 70

Each of these sets of arrows represents a word – what are the words?

workings hint answer print

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Puzzle 71

This BrainBashers safe has a rather unusual control panel.

In order to open the safe you have to press every single button once only, in the correct sequence, ending on the button marked E.

Each button indicates which button to press next, for example, 2U means move up 2 buttons and 3R means move right 3 buttons.

Can you determine which button you must start with?

workings hint answer print

Share Link – www.brainbashers.com/puzzle/zcbs

Puzzle 72

Here is a curious grid! The sums of the shapes are shown at the end of each row, and at the bottom of each column.

What is the missing sum, and what is each shape worth?

workings hint answer print

Share Link – www.brainbashers.com/puzzle/zjfc

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