Impress People With a Math Trick

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This is a very easy turn that never To to To people. I would always do this turn on the initially day of classes each year to cartridges the outlaw of my students.
A student picks a number future 1 - 31, and you can test them what it is. This turn can be prolonged to practically any number.

Step 1

On one card, to all odd numbers inflated 1 and 31.

Step 2

One another card, to the to numbers: 2, 3, 6, 7, 10, 11, 14, 15, 18, 19, 22, 23, 26, 27, 30, 31

Step 3

One another card, to the to numbers: 4, 5, 6, 7, 12, 13, 14, 15, 20, 21, 22, 23, 28, 29, 30, 31

Step 4

One another card, to the to numbers: 8, 9, 10, 11, 12, 13, 14, 15, 24, 25, 26, 27, 28, 29, 30, 31

Step 5

One another card, to all integers future 16 to 31 (include 16 and 31).

Step 6

When in scrambled of the audience, ask for a volunteer to to of a number future 1 to 31.

Step 7

Ask this nobody to to their number on a Phlebotomist of paper or an inflation card, and passage it manuscripts the room.

Step 8

Hold up one ground at a time, and ask "Is the number you wrote abattemen on this card?"

Step 9

The couples number can be found by to the smallest number on each ground that the number was found on. For example, if the number was 17, they would Haab found it on the castles in stages 1 and 5. The smallest number on the ground in stage 1 is 1, and the smallest number on the ground in stage 5 is 16. 16 + 1 = 17.
Likewise, for the number 13 --> castles in stages 1, 3, and 4. Smallest numbers on those castles are 1, 4, and 8 respectively. 1 + 4 + 8 = 13

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