i heard this on the radio the other day..might not work for everyone but lets give it a go..
1. pick a number between 1 - 100
2. with this number you have picked multiply by 9
3. with this total add the digits together... eg total is 45 4+5 =9
4. you should have a single digit left from this, now take away 5 from this...eg 9 - 5 =4
5. if we said that ..1 = a , 2 = b , 3 = c , 4 = d and so on in that order convert your single number to a letter
6. with the letter you have, think of a country beginning with that letter. e.g "f" = finland
7. now with the name of the country, think of a animal using the last word of that country e.g finland = "d" dog...

hopefully we have the same idea as the thread title.. : )

Originally posted by cestrianlabrador i heard this on the radio the other day..might not work for everyone but lets give it a go..
1. pick a number between 1 - 100
2. with this number you have picked multiply by 9
3. with this total add the digits together... eg total is 45 4+5 =9
4. you should have a single digit left from this, now take away 5 from this...eg 9 - 5 =4
5. if we ...[text shortened]... ountry e.g finland = "d" dog...

hopefully we have the same idea as the thread title.. : )

The whole number section is structured to give 4 as your number (n is divisible by 9 iff the sum of the digits is 9 or a multiple of 9 [which would in turn have a sum of 9].

You therefore pick a country beginning with D. These being Denmark, Djibouti, Dominica and the Dominican Republic. Obviously the first is by far the most chosen as the others are obscure and less likely to be the first thought of. Then the matter of picking an animal starting with k. Kangaroo is a common one, probably followed by koala.

Originally posted by XanthosNZ The whole number section is structured to give 4 as your number (n is divisible by 9 iff the sum of the digits is 9 or a multiple of 9 [which would in turn have a sum of 9].

You therefore pick a country beginning with D. These being Denmark, Djibouti, Dominica and the Dominican Republic. Obviously the first is by far the most chosen as the others are o ...[text shortened]... s a common one, probably followed by koala.

Originally posted by cestrianlabrador i heard this on the radio the other day..might not work for everyone but lets give it a go..
1. pick a number between 1 - 100
2. with this number you have picked multiply by 9
3. with this total add the digits together... eg total is 45 4+5 =9
4. you should have a single digit left from this, now take away 5 from this...eg 9 - 5 =4
5. if we ...[text shortened]... ountry e.g finland = "d" dog...

hopefully we have the same idea as the thread title.. : )

I picked 99.
9*9=891
8+9+1=18
18-5=13?

Remember to limit the choices to numbers from 1 to 10 when performing this trick, or else ask to add the digits repeatedly until we actually have an one digit number.

Originally posted by fetofs I picked 99.
9*9=891
8+9+1=18
18-5=13?

Remember to limit the choices to numbers from 1 to [b]10 when performing this trick, or else ask to add the digits repeatedly until we actually have an one digit number.[/b]

Originally posted by fetofs I picked 99.
9*9=891
8+9+1=18
18-5=13?

Remember to limit the choices to numbers from 1 to [b]10 when performing this trick, or else ask to add the digits repeatedly until we actually have an one digit number.[/b]

18, 1+8=9 gives same answer anyway, what cestrian labrador should have clarified was that you have to keep going till you get a single (digit) number.