Các câu hỏi tương tự
tim so tu nhien n nho nhat de cac phan so sau toi gian
7/n+9, 8/n+10, 9/n+11,...,100/n+102
tim so tu nhien nho nhat de cac phan so sau toi gian :
5/n+6;6/n+7;7/n+8;...........;31/n+32
tim tat ca cac so tu nhien n de phan so n+3/n -12 la phan so toi gian
tim n de cac cac phan so sau la phan so toi gian
\(\frac{n+7}{3};\frac{n+8}{4};\frac{n+9}{5};\frac{n+10}{6};\frac{n+11}{7}\)
tim cac so tu nhien n khac 0 de cac phan so sau la phan so toi gian
7/n-3
n+7/n+2
2n+16/n+5
3n+4/n3
CMR: Neu phan so 7n^2+1/6 la so tu nhien voi n thuoc N thi cac phan so n/2 va n/3 la cac phan so toi gian
tim phan so toi gian nho nhat co tu va mau la cac so tu nhien sao cho khi nhan phan so do lan luot voi cac phan so 10/7;5/6;15/9 thi moi tich tim duoc la so tu nhien.
tim so tu nhien n de phan so sau day toi gian
a)3/n,5/n,12/n (n nho nhat)
b)5/n+8;6/n+9;7/n+10
1.Tinh gia tri bthuc:
A=1+3+5+...+19/21+23+25+...+39
2.Tim so tu nhien x,biet:
(5^x)*(5^x+1)*(5^x+2)=
1000000000000000000:2^18
3.1CMR:so viet boi 27 chu so giong nhau thi chia het cho 27
2.tim so n co 4 chu so,biet n la so chinh phuong va n chia het cho 147
4.Tim so tnhien n nho nhat de cac phan so sau deu toi gian:
7/n+9; 8/n+10; 9/n+11;...........;100/n+102