Tuyển Cộng tác viên Hoc24 nhiệm kì 26 tại đây: https://forms.gle/dK3zGK3LHFrgvTkJ6
2 4 6 8 la cac so chan vay thi 1 3 5 7 9 la cac so le khi cong tung so lai ta se duoc 45 so chan la 20 so le la 25 khi chia tong cua cac chu so le
cho tong cua cac chu so chan ta duoc bao nhieu (khong du) de sao cho so do bang tong cua cac chu so le va chu so chan
tim tong cac chu so cua cac so co 2 chu so
tim tat ca cac so tu nhien có 2 chu so biet rang chu so hang don vi nho hon chu so hang chuc la 2 va tich cua chu so do cua no luon lon hon tong cua hai chu so cua nó la 34 don vi
Tim so tu nhien co 2 chu so biet rang chu so hang chuc lon hon chu so hang don vi la 2 va so do lon hon tong cac binh phuong cac chu so cua no la 1.
nguyen to a co so hieu nguyen tu la 11 , chu ki 3,nhom I trong bang tuan hoan cac nguyen to hoa hoc.hay cho biet:
-cau tao nguyen tu cua A.
-tinh chat hoa hoc dac trung cua a
-so sanh tinh chat hoa hoc cua a voi nguyen to lan can
cho tam giac ABC co goc A=100
a)Tinh tong B+C
b)Ve cac tia pha giac cua B va C cat nhau tai diem M
Tinh so do goc BMC
tim mot so co 2 chu so. biet chu so hang chuc>chu so hang don vi la 2 neu lay so do chia tong chu so cua no dc 6 du 1
viet cac so co 2 chu so ma co chu so hang don vi la so ien truoc cua 3
Cho day so 1,1,1,1,2,1,1,3,3,1,1,4,6,1,1,5,10,10...
Tim tong 7 chu so tiep theo cua day so
