BrainBashers - Random Puzzles

Puzzle 13

How many times can you take 7 away from 49?

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Puzzle 14

A Proof That 2 = 1. Let A = B:

           A = B

multiply by A on both sides:

         A x A = A x B

subtract B x B from both sides:

   A x A − B x B = A x B − B x B

factorise:

  (A + B)(A − B) = B(A − B)

divide by (A − B) on both sides:

       (A + B) = B

replace A with B:

         B + B = B

factorise:

          2B = B

divide by B on both sides:

           2 = 1

Where lies the flaw in the logic?

workings answer print

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Puzzle 15

Below, 10 nine-letter words have been broken into chunks of three letters.

The chunks have been moved around, no chunk is used twice, and all of the chunks are used.

Can you determine what the 10 words are?
hol rec ant imp fer con
man dif ice pol acq htn
ort myt new air sag duc
dec lig kch ogy ing tan
uit ent gle tal tor ent

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Puzzle 16

Below, 10 nine-letter words have been broken into chunks of three letters.

The chunks have been moved around, no chunk is used twice, and all of the chunks are used.

Can you find the 10 words?
tin som mea and all ple
sca eth ile rbr man ssl
pol rec hai yes gra wat
ing ter ice eap erf ate
nwh pin obs ush row day

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