Now you, the magician pick up the pack and put it behind your back reminding the spectator how you couldn’t possibly know which card he selected and its position in the pack. Next count 15 cards from the top reversing their order as you do so and replace them on top of the pack. Bring the pack round the front until the spectator that you are now going to make the situation even more difficult for yourself by asking him to take the small packet of cards from his pocket and place them on top of the pack also. Get the spectator to do this and when it is done, the selected card will now be the 15th card from the top of the pack and of course there are many ways that you can reveal this in as entertaining way as possible.

How the Trick is Done

This is a self working mathematical card trick. In fact you could have reversed any number of cards on top of the pack but whichever number it must always the higher than the number contained in each of the piles of the spectator dealt.