Page 135 - Fixtures
P. 135
@ @pbjïØ Üa@ @QRP
67 ( ) 61 ( ) 59 ( ) 47 ( )
[AIME 1988] ( )
.10 1
5
.
.9 1 {1, 2, 3,…,10}
1024 ( ) 1022 ( ) 770 ( ) 252 ( )
. [AIME1989] ( )
1024 ( ) 512 ( ) 968 ( ) 56 ( )
1, 2, 3,…, 9 [UOSCHSMC 1993] ( )
43 21
9×6! ( ) 9×7! ( ) 6 5
9×8! ( ) 9! ( )
(
)
x1 + x2 + x3 = 99
1225 ( ) 1035 ( ) 512 ( ) 99 ( )
.
( )
