Chủ đề này có 2 trả lời

[taro_girl]

các bạn hãy cho biết ý nghĩa của các con số này nhé:

0 is the additive identity.

1 is the multiplicative identity.

2 is the only even prime.

3 is the number of spatial dimensions we live in.

4 is the smallest number of colors sufficient to color all planar maps.

5 is the number of Platonic solids.

6 is the smallest perfect number.

7 is the smallest number of integer-sided rectangles that tile a rectangle so that no 2 rectangles share a common length.

8 is the largest cube in the Fibonacci sequence.

9 is the maximum number of cubes that are needed to sum to any positive integer.

10 is the base of our number system.

11 is the largest known multiplicative persistence.

12 is the smallest abundant number.

13 is the number of Archimedian solids.

14 is the smallest number n with the property that there are no numbers relatively prime to n smaller numbers.

15 is the smallest composite number n with the property that there is only one group of order n.

16 is the only number of the form xy=yx with x and y different integers.

17 is the number of wallpaper groups.

18 is the only number that is twice the sum of its digits.

19 is the maximum number of 4th powers needed to sum to any number.

20 is the number of rooted trees with 6 vertices.

21 is the smallest number of distinct squares needed to tile a squares.

22 is the number of partitions of 8.

23 is the smallest number of integer-sided boxes that tile a box so that no two boxes share a common length.

24 is the largest number divisible by all numbers less than its square root.

25 is the smallest square that can be written as a sum of 2 squares.

26 is the only number to be directly between a square and a cube.

27 is the largest number that is the sum of the digits of its cube.

28 is the 2nd perfect number.

29 is the 7th Lucas number.

30 is the largest number with the property that all smaller numbers relatively prime to it are prime.

31 is a Mersenne prime.

32 is the smallest 5th power (besides 1).

33 is the largest number that is not a sum of distinct triangular numbers.

34 is the smallest number with the property that it and its neighbors have the same number of divisors.

35 is the number of hexominoes.

36 is the smallest number (besides 1) which is both square and triangular.

37 is the maximum number of 5th powers needed to sum to any number.

38 is the last Roman numeral when written lexicographically.

39 is the smallest number which has 3 different partitions into 3 parts with the same product.

40 is the only number whose letters are in alphabetical order.

41 is the smallest number that is not of the form |2x - 3y|.

42 is the 5th Catalan number.

43 is the number of sided 7-iamonds.

44 is the number of derangements of 5 items.

45 is a Kaprekar number.

46 is the number of different arrangements (up to rotation and reflection) of 9 non-attacking queens on a 9x9 chessboard.

47 is the largest number of cubes that cannot tile a cube.

48 is the smallest number with 10 divisors.

49 is the smallest number with the property that it and its neighbors are squareful.

50 is the smallest number that can be written as the sum of of 2 squares in 2 ways.
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[vietkhoa]

Thế mà không hiểu à;tự tra từ điển đi chứ.Mình xin dịch thử một số ví dụ:
0 là số mọi số TN
1 là số nhân với số nào cũng bằng chính nó
2 là số nguyên tố chẵn duy nhất
3 là số chiều không gian ta đang sống
...
Có dịp em xin post tiếp

[NguyenVanHung]

Hihi. Tuan nay minh duoc giao phai tim cho ra 10 cau hoi đố vui trac nghiem lien quan den toán,yeu cau phai vua tam de cho doi tuong tra loi trtong vong 30 giay. Minh kiem dau ra nhi?co ban nao co thi hay post cho minh mot it duoc ko? ca nhung cau tra loi va vi sao lai vay nua nhe?cam on cac ban nhiu nhiu. nếu có cả câu đố bang tieng Anh thi cang hay.hihi. Nho la phải trắc nghiẹm nhe?