1~9的填字問題 - 拼圖
By Enid
at 2008-01-28T18:42
at 2008-01-28T18:42
Table of Contents
※ 引述《ACGfans (菜心)》之銘言:
: 我媽剛剛問我的
: 如何用 1~9 湊乘數與被乘數 (也就是只有兩組)
: 來組成最大的乘積
: 例如:
: 8321 * 97654 = 812578934
: 當然有更大的
: 能附上解題想法會更好~
先從分解的來看
97*8=776 < 9*87=783
所以,在增加新的一個位數的時侯
放在小的那邊,會有比較大的積
9*87
96*87
96*875
964*8753
9642*8753
9642*87531=843973902
--
: 我媽剛剛問我的
: 如何用 1~9 湊乘數與被乘數 (也就是只有兩組)
: 來組成最大的乘積
: 例如:
: 8321 * 97654 = 812578934
: 當然有更大的
: 能附上解題想法會更好~
先從分解的來看
97*8=776 < 9*87=783
所以,在增加新的一個位數的時侯
放在小的那邊,會有比較大的積
9*87
96*87
96*875
964*8753
9642*8753
9642*87531=843973902
--
Tags:
拼圖
All Comments
By Dorothy
at 2008-02-02T07:28
at 2008-02-02T07:28
By Kelly
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at 2008-02-05T01:41
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