Serial Number Feat 3967

8/3/2019 Serial Number Feat 3967

1/14

Serial Number FeatOriginated by Royal V. Heath

Presented by Grey Matters Mental Gym

http://members.cox.net/beagenius/


2/14

Serial Number Feat

In the Serial Number Feat, you ask

someone to take out a bill, and make sure

you dont see the serial number.

You ask for the totals of the 1st and 2nd

digits, the 2nd and 3rd digits, and so on,

up to the 7th and 8th digits. You also askfor the total of the 2nd and 8th digits.

After some figuring on a notepad, you

can give the hidden serial number!


3/14

Serial Number Feat

Requirements

Notepad

Pencil

Spectator

The bill used in the experiment must have

an even number of digits in the serial

number, such as U.S. bills with 8 digits.


4/14

Serial Number Feat

Ask a spectator to remove a bill from

their pocket. As an example, lets say thehidden serial number is 37036914.

Ask for the total of the 1st & 2nd digits,

and write that on the notepad. In ourexample, the answer would be 10 (3+7).


5/14

Serial Number Feat

Ask for the total of the 2nd & 3rd digits,

the 3rd & 4th, and so on up to the total of

the 7th and 8th digits, writing each

answer on the notepad. In our example,

your notepad would now read: 10-7-3-9-15-10-5


6/14

Serial Number Feat

Finally, ask for the total of the 2nd and

8th digits on the bill, and write that

answer on the notepad. Adding this

answer, our example notepad would now

read: 10-7-3-9-15-10-5-11


7/14

Serial Number Feat

Notepad reads: 10-7-3-9-15-10-5-11Add the 2nd, 4th, 6th and 8th totals

together. In our example, we add

7+9+10+11 to get 37. Write that totaldown below the other totals.


8/14

Serial Number Feat

Notepad reads: 10-7-3-9-15-10-5-11

37Next add the 3rd, 5th and 7th digits

together (note that the 1st total isnt

included).In our example, we add3+15+5 to get 23. Write that total beside

the previous total.


9/14

Serial Number Feat

Notepad reads: 10-7-3-9-15-10-5-1137 23

Using the two totals on the second line,

subtract the 2nd from the 1st.In ourexample, this is 37-23, giving us 14.


10/14

Serial Number Feat

Notepad reads: 10-7-3-9-15-10-5-11

37 - 23 = 14

Divide this answer by 2, which will give

the 2nd digit of the serial number. In our

example, 14/2=7, so we know that thesecond digit of the serial number is 7.


11/14

Serial Number Feat

Notepad reads: 10-7-3-9-15-10-5-11

37 - 23 = 14 . . . . 14/2=7

Subtract the 2nd digit (7 in our example)

from the 1st total (10 in our example) to

get the 1st digit of the serial number. Inour example, we perform 10-7 to get 3.


12/14

Serial Number Feat

Notepad reads: 10-7-3-9-15-10-5-11

37 - 23 = 14 . . . . 14/2=737

The rest of the digits are worked out in a

similar manner.In our example, the totalof the 2nd and 3rd digits is 7, giving us 7-

7=0 as the third digit.


13/14

Serial Number Feat

Notepad reads: 10-7-3-9-15-10-5-11

37 - 23 = 14 . . . . 14/2=7

370

Continue working through the rest of the

totals one by one, ignoring the final total

(11, in our example, which is the total ofthe 2nd and 8th digits). Try and work out

the remaining digits of our example

before continuing.


14/14

Serial Number Feat

Notepad reads: 10-7-3-9-15-10-5-11

37 - 23 = 14 . . . . 14/2=737036914

Once youve worked out each digit, you

now have the serial number (example inboldabove)! Read it off to the spectator

to verify that you are correct.

Documents

Serial Number Feat 3967