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Lufi

數學題# T( r% F3 Q  [2 r* R5 W

, S; C3 y$ R1 [8 V( j$ P7 p& }5364 3392 3036' f$ R9 a4 L) L; b
6879 5372 3816tvb now,tvbnow,bttvb& W- u- M7 \* f) _
8697 8342   X
# _" ?5 u9 Q: s: _9 }1 Q) FWhat is X?
" f3 C& Z7 T# D) [tvb now,tvbnow,bttvb公仔箱論壇: y* b' v. V$ Y- l6 I0 S/ Y
answer:
5 U# `, t3 N" ^0 c$ }52x64 = 3392         33x92=3036
- q# v& M+ I2 s5.39.217.7668x79 = 5372         53x72=3816公仔箱論壇' J' `  C$ I8 D, j
86x97 = 8342         83x42=3486(X)