2道英语题(加分)1.The three sides of a triangle are of lengths 1,m,
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2道英语题(加分)
1.The three sides of a triangle are of lengths 1,m,and n,respectively.The numbers 1,m,and n are positive integers,1≤m≤n.Take n=9 and find the number of different triangles of the described kind.
2.To number the pages of a bulky volume the printer used 1890 digits.How many pages has the volume?
请翻译,能解答更好!谢谢!
1.The three sides of a triangle are of lengths 1,m,and n,respectively.The numbers 1,m,and n are positive integers,1≤m≤n.Take n=9 and find the number of different triangles of the described kind.
2.To number the pages of a bulky volume the printer used 1890 digits.How many pages has the volume?
请翻译,能解答更好!谢谢!
![2道英语题(加分)1.The three sides of a triangle are of lengths 1,m,](/uploads/image/z/11169400-40-0.jpg?t=2%E9%81%93%E8%8B%B1%E8%AF%AD%E9%A2%98%EF%BC%88%E5%8A%A0%E5%88%86%EF%BC%891.The+three+sides+of+a+triangle+are+of+lengths+1%2Cm%2C)
1.三角形三条边长各为1,m,n(1,m,n为正整数,1≤m≤n),当n=9时,列出符合要求的三角形.
答:只有一个,m=9,n=9时符合,它是等腰三角形.
2.数出一本有1890张纸的书有多少页?
答:这很简单,1890*2=3780(张).
保证正确!
答:只有一个,m=9,n=9时符合,它是等腰三角形.
2.数出一本有1890张纸的书有多少页?
答:这很简单,1890*2=3780(张).
保证正确!
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