## Numeric O

Clettis V. Mus son

Someone is requested to sit at a table with his back toward the group. On the table is a paper and pencil. The performer, turning to another spectator, requests him to write a three digit number on a slip of paper. This number is rewritten in large figures, by the performer, on another large sheet of paper or a slate, and held up where everyone except the person sitting at the table may see it. Now, the spectator at the table is requested to do some calculations involving addition, subtraction, multiplication and division. At no time does the performer see or know what figures are being used. After the calculations, the spectator is requested to call out his answer. It is the same as the one written by the second spectator on the paper which has been held up by the performer in full view since its inscription.

METHOD: This startling, impromptu effect is merely an extension of a little known trick, yet the mere elongation has built it into a baffling masterpiece. So baffling, in fact, that some magicians after having seen it performed have asked where it could be purchased, others have said it seems impossible.

To perform, you should have a table in front of the group with a chair. The back of the chair must be toward your audience. On the table have some paper and a pencil. If you are performing the trick where no table is available, then a scratch pad may be used. This provides a writing surface. The spectator who is to do the calculating must sit at the table with his back to the audience, or if a scratch pad is used, and no table, he must stand with his back to the audience.

Once you know this answer you have your spectator add, multiply, subtract and divide until the specified answer is reached. You, of course, do the calculation mentally and silently in your mind until the end of the calculating. This is much easier to do than you will perhaps realize at first. Let's take the 5 and build it up to the 698. You can drag it out indefinitely or do it quickly. First, we'll do it quickly as follows:

Tell the spectator to take twenty times the answer he now has. 20 x 5 equals 100. Now tell him to take seven times that. 7 x 100 equals 700. Instruct him to subtract 2, and call out his answer. It is, of course, the desired answer; namely, 698.

Let's try it by a quick method again only in a more effective way. Have the 5 multiplied by 5. This gives 2 5. Tell him to add 2 5 which makes 50. Instruct him to multiply this by 10 making 500, and to add 200 which gives a total of 700. Next, have 2 subtracted. Once again we have arrived at 698.

You will notice in this method we deal mostly in figures that are multiples of 5's and 10's. This is the secret of making the mental calculations easy. In this last example, when we arrive at 700, you could have said subtract 100 giving 600, then request that 98 be added, again arriving at 698. The following example is an effective way to perform this trick because it covers multiplication, addition, division and subtraction.

First have the spectator put down any number he desires. Let's assume he writes down 12. You do not have to know what this number is because when he arrives at 5 you carry on from there.

Divide by

Subtract first number Begin your mental calculations here

Multiply by

Subtract

Multiply by Divide by

Multiply by

Subtract

Multiply by

Subtract 