Remove
Jokers, Kings, Queens, Jacks, Tens

Ask
participant to shuffle the remaining cards.

Fan
the cards, instruct participant to pick a card, memorize it then put
it back into the deck.

Turn
your back to the participant.

Ask
them to complete the following steps:

Their
card x 2

Add
5

Multiply
by 5

Participant
must remember this number.

Ask
participant to
choose
another card from the deck.

Add
this card to the preceding total.

Ask
them to now reveal this total.

You
must mentally subtract 25 from their answer.

The
two digits are the two cards they had selected.