There are a number of magicians
who have created mathematical
card tricks and would be worth
checking out, such as the 20th
century magicians Bob Hummer and
John Scarne. A maths card trick
does not involve slight of hand
but works due to a hidden
pattern. Here is a lovely
mathematical card trick for you
to try.
Start with 15 cards of which the
bottom card is known. Deal out
more than 7cards into a pile and
then place the remaining cards
on top of that pile. Repeat this
twice more using the same
number. The known bottom card
will always rise like cream to
the top of the pile.
This very clever card trick was
invented by Colm Mulcahy and it
will always work provided that
the number of cards you deal out
is more than half the number of
cards in the pack.
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