- 精华
- 0
- 积分
- 96
- 经验
- 96 点
- 威望
- 0 点
- 金钱
- 137 ¥
- 魅力
- 96
|
十月寂静求助!!!!
十月寂静求助!!!!
--------------------------------------------------------------------------------
4.DS
一整数除以8余几?
1.除以12余5=》除8余5,1
2.除以11余7=》除8余7,2,5,0,5,6,1,4
答案:C 方法?怎么我列举法列出来是E?
公式法:12A+5=11B+7,=》A=2,13。。。发现余数还是5,1,E
这题怎么想呢?
130、n*=n^2+1, K*=?
1) k^2除以4余1
2) k*大于等于18小于等于36
【机委】E
好象是C啊,是不是因为K没说是整数
56. a large square and a small square (有图),centers of two squares overlap. points W, X, Y, Z (in this order) are vertices that lie on the diagonal of the big square: W and Z are vertices of the big square, X and Y are vertices of the small one. distance WX=XY=YZ. the area of the small square is what fraction of the area of the big one? choices have 1/8, 1/9
【确认】1/9 (想了一气,怕漏看条件说那个大的是空心的,那样就是1/8了,看了半天,题目没有这种暗示)
看不懂题目???
131.The number of 25cents is twice as much as that of 10cents, and the number of 5cents is twice as much as that of 10cents, ask for the ratio of the total amt of 25cents and that of 5cents.
【讨论】5/1
题目是啥意思啊?
135 A computer can be obtained in City A for A and the CT ( Consumption Tax) rate is T1. The same computer can be purchased in City B for B and the CT rate is T2, To compare the cost of the two cities.
(1)A is $30 greater than B
(2)AT1 > BT2
【讨论】e
题目是啥意思啊? |
|