Bài 1: VViết các số 1/25 ; 1/625 dưới dạng lũy thừa của 1/5
Ta có:
1/25 = 1/5 . 1/5 =
1/625 =
K
Khách
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Những câu hỏi liên quan
NT
1
QN
15 tháng 10 2017
My favourite leisure activity is reading. I like reading because it is a hobby that is useful and interesting: useful because you can find a lot of knowledge of all areas that you need; interesting because the books can give you the joy and help you relax after a day of toil etc... Especially, when you join the forum, you can meet a lot of people who have interests similar to yours, comment on the books or novels that interest you.
I love books and also natural as reading books. At the age of ten, I was awarded "The Scarlet Sails" of Alexandre Green by my grandfather. It is the first of book that I have been. I read it does not know how many times (Up to now, I still love it and occasionally read it again). My love for books begun.
I usually spend almost of free time in choosing the book with my friends, participate in dicussion on the forum and reading (of course!). Every weekend and all holidays when I have no work to do, I often read books and ruminate on it. I also help some friends can select the genres of books that they like.
I always hope that I will have my own library in my future. I love books very much and perhaps, I couldn't live without them.
Bạn tham khảo nhé 
PT
0
26 tháng 2 2022
uses crt;
var s1,s2:string;
i,j,d1,d2:integer;
begin
clrscr;
readln(s1,s2);
d1:=length(s1);
d2:=length(s2);
for i:=1 to d1 do
if not(s1[i] in ['0'..'9']) then delete(s1,i,1);
for i:=1 to d2 do
if not(s2[i] in ['0'..'9']) then delete(s2,i,1);
writeln(s1);
writeln(s2);
writeln(s1+s2);
readln;
end.
NB
28 tháng 4 2023
program TrungBinhCong;
const
MAX = 100;
var
danhSach: array[1..MAX] of integer;
n, i, tong: integer;
trungbinh: real;
begin
write('Nhap so ptu (toi da 100): ');
readln(n);
tong := 0;
for i := 1 to n do
begin
write('Nhap giatri ptu thu ', i, ': ');
readln(danhsach[i]);
tong := tong + danhsach[i];
end;
trungbinh := tong / n;
writeln('Tbc cua danh sach la: ', trungbinh:0:2);
readln;
end.
KV
29 tháng 4 2023
Var a:array[1..100] of integer;
i,n:integer;
s:longint;
tbc:real;
Begin
Repeat
Write('n = ');readln(n);
Until (n>0) and (n<=100);
For i:=1 to n do
Begin
Write('Nhap phan tu thu ',i);readln(a[i]);
s:=s+a[i];
End;
tbc:=s/n;
Write('Trung binh cong la ',tbc:10:2);
Readln
End.
LA
1
13 tháng 10 2021
\(1,\left(x-1\right)\left(y-2\right)=2\left(x,y\in N\right)\\ \Leftrightarrow\left[{}\begin{matrix}\left\{{}\begin{matrix}x-1=2\\y-2=1\end{matrix}\right.\\\left\{{}\begin{matrix}x-1=1\\y-2=2\end{matrix}\right.\end{matrix}\right.\Leftrightarrow\left[{}\begin{matrix}\left\{{}\begin{matrix}x=3\\y=3\end{matrix}\right.\\\left\{{}\begin{matrix}x=2\\y=4\end{matrix}\right.\end{matrix}\right.\\ \Leftrightarrow\left(x;y\right)=\left\{\left(3;3\right);\left(2;4\right)\right\}\)
`1/25 = 1/5 . 1/5 =(1/5)^2`
`1/625 = 1/5*1/5*1/5*1/5 = (1/5)^4`