十万火急We have coins of 1 point,2 points,5 points in a bag.A ta

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十万火急
We have coins of 1 point,2 points,5 points in a bag.A takes 3 coins.B takes 2.Out of the 5 coins,there are only two kinds of value.The value of 3 coins of A is less than that of the coins of B.What's the total number of the coins at most?
A.13 B.15 C.17 D.19
There are only two questions a mathematics test.10 students get both correct answers.25 students get the correct answer to the first question,18 students get the wrong answer to the second question.How many students get neither of the answers?
A.10 B.3 C.7 D.15
A string of 40 beads is in the order of 8 red ones and 2 black ones.A cricket jumps from the second black bead.Every time it jumps over 6 beads and fall on the next beads.How many times dose the cricket jump to fall on the black beads?
A.3 B.6 C.10 D.5
On a line segment,there are six points.Then how many line segments are there on it?
A.21 B.28 C.36 D.56
我明天上午就要去考外国语了,这是老师给我的试卷上的题目,5点之前一定要解答出来!十万火急!

D,B,D,B
第一题说一个袋子里有1分,2分,和五分三种硬币,A从里拿出3个,B拿出两个.拿出来的五个硬币中,只有两种价值.A手里的价值小于B手里的价值,问最多可有多少个硬币在袋子里?
二题说一共两道数学题,10个同学两道都答对,25个同学第一道题答对了,18个同学第二道题打错了,问有多少同学两道题都没对?
三题说,一排珠子,按照八个红珠子接两个黑珠子的顺序排列,一个球从第二个黑珠子开始跳,每次跳过6个珠子.问跳过多少次才能落到黑珠子上?
四题是一条线段上有六个点,一共有多少条线段?
这些题都不难吧,翻译出来看懂了都好算

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