|
one method is to have:DXwT 9 8 7 6 5 9 8 7 6 5 maps to
¥Ò¤A¤þ¤B¥³¤v©°¨¯¤Ð¬ÑGm and©½t¥Í³N¼Æ¬ã¨sªÀ -- ³N¼Æ¬ã¨s¡@¡@ x 9 8 7 6 5 4 9 8 7 6 5 4 maps toE"49b5 ¤l¤¡±G¥f¨°¤x¤È¥¼ ¥Ó¨» ¦¦¥è
then e.g. foriF3Rw ¥Ò¤l¤A¤¡, add them together, gets 9+8+9+8 = 34.L6<l divided by 5, remainder is 4, and then, I forgot ... but it's documented in many books.h,C ©½t¥Í³N¼Æ¬ã¨sªÀ -- ³N¼Æ¬ã¨s¡@¡@ fk the 2nd method is based on previous method, and using the "palm" to aid the calculation, and should be able to count the result within 2-5 seconds. It's quite hard for me to illustrate here though ... it's maths, anyway. not hard to derive oneself. This method is documented in 1 or 2 books only -- the books I have read so far.@UW4( ©½t¥Í³N¼Æ¬ã¨sªÀ -- ³N¼Æ¬ã¨s¡@¡@ Y9fs But I have to admit that if you have good memory, ¤èªk¤@ is a good way.g ©½t¥Í³N¼Æ¬ã¨sªÀ -- ³N¼Æ¬ã¨s¡@¡@ (! And finally, my suggestion is, to prepare a cheat-sheet ... or, save it in PDA... b`6
| | |
|
|
|