co bao nhieu phan so toi gian co tu la 10 ,lon hon 10/13 nhung nho hon 10/7
tinh tong cac phan so toi gian lon hon 3 nhung nho hon 4 co mau so bang 7 ket qua la..............
tim phan so lon nhat va phan so nho nhat co tu la 5,lon hon 6/20 va be hon 6/10
co bao nhieu so co 1 chu so o phan thap phan ma lon hon 8 ma nho hon 10
tinh tong cac phan so toi gian khong la so tu nhien co mau 11 lon hon 12 va nho hon 35
giup toi voi
co bao nhieu so thap phan co mot chu so phan thap phan lon hon 8 va nho hon 10
Tim phan so co tu bang 7, lon hon \(\dfrac{10}{13}\)va nho hon \(\dfrac{10}{11}\)
\(\dfrac{7}{8};\dfrac{7}{9}\)
Tim phan so co tu bang 7, lon hon\(\frac{10}{13}\)va nho hon \(\frac{10}{11}\)
Phân số cần tìm có dạng: \(\frac{7}{x}\)
Theo bài ra ta có:
\(\frac{10}{13}< \frac{7}{x}< \frac{10}{11}\)
<=> \(\frac{70}{91}< \frac{70}{10x}< \frac{70}{77}\)
=> \(77< 10x< 91\)
<=> \(7,7< x< 9,1\)
làm nốt
Co bao nheu phan so 7 phan 8 nhung nho hon 9 phan 10
A ) Co mau la 40
B ) Co mau la 80
Câu 1:so phan tu cua tap hop cac so tu nhien chan lon hon 3 va nho hon 2000
Câu 2:so phan tu cua tap hop cac so tu nhien chan khong vuot qua 30 la
Câu 3 co bao nhieu so tu nhien co hai chu so trong do chu so hang chuc nho hon chu so hang don vi la 5 ?
Câu 4:so phan tu cua tap hop cac so tu nhien khong vuot qua 20 la
Câu 5:cho tap hop M={5;8;9;1986;2010}co bao nhieu tap hop con cua M gpm nhung so chan?