put the eight numbers-8,-6,-4,-2,0,2,4,6into the following box so that the sum of numbers in any rows or columns are equal.
_______________________________________
____________l_____________l_____________l
____________l//////////////////////////l_____________l
____________l_____________l_____________l
maths iq
2007-08-01 4:30 am
回答 (2)
2007-08-01 5:21 am
✔ 最佳答案
____________________________________________-8_____l______0______l_____6_______l
______2_____l//////////////////////l_____-6______l
______4_____l______-4_____l_____-2______l
-8+0+6=-2
4+(-4)+(-2)=-2
-8+2+4=-2
6+(-6)+(-2)=-2
幾好玩=]
參考: myself
2007-08-01 5:25 am
Let R = sum of the numbers of each row (they are equal)
Sum of the three rows = -8 + -6 + -4 + -2 + 0 + 2 + 4 + 6 = -8
3R = -8
R=-(3/8) fractional which is impossible.
So there is no solution to this question.
(This question has been raised and answered:
http://hk.knowledge.yahoo.com/question/?qid=7007071501296
2007-07-31 21:26:47 補充：
R= -8/3
Sum of the three rows = -8 + -6 + -4 + -2 + 0 + 2 + 4 + 6 = -8
3R = -8
R=-(3/8) fractional which is impossible.
So there is no solution to this question.
(This question has been raised and answered:
http://hk.knowledge.yahoo.com/question/?qid=7007071501296
2007-07-31 21:26:47 補充：
R= -8/3
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https://hk.answers.yahoo.com/question/index?qid=20070731000051KK04933