问一道og 的math

sdchUID: 2392811

og P672 13

Kyle's lock combination consists of 3 two-digit numbers
6 B% s$ }; v3 E0 b# n$ yone number is odd
( ^2 ~% \. ^$ @9 a/ \# X9 none number is multiple of 5
+ F9 P; Q% k. y7 tone number is the day of the month of Kyle's birthday

if each number satisfies exactly one of the conditions which of the following could be the combination to the lock?

. q) x3 B# S% y& Z
* r3 `) y/ B5 e- g$ R& u9 Y2 P
# p2 |. C- n  L& [a 14 20 13
b 14 25 13
c 15 18 16
" j/ _- ?( T* x/ S! F* c" W; E6 Yd 20 15 20
e 34 30 21
答案是a　我觉得b d 都可已啊

深海lavenderUID: 2350207

题目中说每个数字只满足一个条件,B有2个奇数了,D有2个一样的.

hyacinthUID: 2184492

b 有两个odd
d 有三个mutiple of 5
- N$ V3 k+ O# c5 n3 \# Q' ]2 {
" G6 D" Y1 i  F- k. J7 O" S, ]貌似这样理解satisfies exactly one of the conditions ?

深海lavenderUID: 2350207

原帖由 hyacinth 于 2007-9-7 13:10 发表
( P/ q" x- s8 T, V7 ?+ gb 有两个odd
/ ^1 }) K1 Q% i7 M  u1 i% f8 |d 有三个mutiple of 5

. J7 p2 b! [+ u! k- R. d& n* N貌似这样理解satisfies exactly one of the conditions ?

* A0 d& R% T3 nexactly.

sdchUID: 2392811

dinggggggggg       感激不尽！！:) :funk: