20到40这些数中 3,5的倍数有

1.①从20到40中,含有因数3的数有（21,24,27,30,33,36,39 ）,同时是2、3的倍数的有（24,30,36 ）,同时是2、3、5、的倍数的有（30 ）

1. 窗体上加一个label 控件
2.
Private Sub Form_Load()
Dim MyValue
Dim i, j
Label1.Caption = ""
For i = 1 To 5
For j = 1 To 4
Randomize
MyValue = Int((40 * Rnd) + 20) ' 生成 20 到 40 之间的随机数值
Label1.Caption = Label1.Caption & " " & MyValue
Next j
Label1.Caption = Label1.Caption & " " & Chr(13)
Next i
End Su

20钙(gài)
21钪(kàng)
22钛(tài)
23 钒(fán)
24铬(gè)
25锰(měng)
26铁(tiě)
27钴(gǔ)
28 镍(niè)
29 铜(tóng)
30 锌(xīn)
31镓(jiā)
32锗(zhě)
33砷(shēn)
34硒(xī)
35溴(xiù)
36 氪(kè)
37铷(rú)
38锶(sī)
39钇(yǐ)
40锆(gào)
明白请采纳,
有新问题请求助,

Option Base 1
Dim a(4,5) As Integer
Private Sub Command1_Click()
Dim i As Integer,j As Integer
For i = 1 To 4
For j = 1 To 5
Randomize
a(i,j) = Int(Rnd * 9 + 1)
Picture1.Print a(i,j);
Next j
Picture1.Print
Next i
End Sub
Private Sub Command2_Click()
Dim max As Integer,min As Integer,max_i As Integer,min_i As Integer,s As String
max = 0
min = 9999
For i = 1 To 4
Sum = 0
For j = 1 To 5
Sum = Sum + a(i,j)
Next j
s = s + Str(Sum) + vbCrLf
Text2.Text = s
If Sum > max Then
max = Sum
max_i = i
End If
If Sum < min Then
min = Sum
min_i = i
End If
Next i
Text1.Text = Str(max_i) & Str(min_i)
For j = 1 To 5
temp = a(max_i,j)
a(max_i,j) = a(min_i,j)
a(min_i,j) = temp
Next j
For i = 1 To 4
For j = 1 To 5
Picture2.Print a(i,j);
Next j
Picture2.Print
Next i
End Sub
更详细说明见
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,3,13,23,31,37,

奇数：1,3,5,7,9,11,13,15,17,19,21,23,25,27,29,31,33,35,37,39.
偶数：2,4,6,8,10,12,14,16,18,20,22,24,26,28,30,32,34,36,38,40.
素数：2,3,5,7,11,13,17,19,23,29,31,37.
和数：4,6,8,9,10,12,14,15,16,18,20,21,22,23,24,25,26,27,28,29,30,32,33,34,35,36,38,40.
打得很累哦,快把5分送给我,不要骗我哦!

twentieth twenty-first twenty_second twenty third twenty fourth twenty fifth twenty sixth twenty seventh twenty eighth twenty ninth thirtieth thirty+(123456789) fourty

twenty,twenty-one ,twenty-two twenty-three twenty-fou twenty-five twenty-six twenty-seven
twenty-eight twenty-nine thirty thirty-one forty-one

20到40的素因数有(23 29 31 37)

最大只能报3嘛 比如你要到40 就一定要报到36 就是一定要按4的倍数来 他报1你报3 他报2你也报2 ,如果39就要报到35 一个一个往上推 一开始就要报3 然后每次报的数和对方相加为4 一个道理.希望我没理解错题目的意思.
楼主你第二个补充写56是什么意思?

20,21,22,23,24,25,26,27,28,29,32