P=(1-1/7)*(1-2/7)*(1-3/7)*......*(1-2019/7)=(1-1/7)*(1-2/7)*(1-3/7)*...*(1 - 7/7)...*(1-2019/7)
=(1-1/7)*(1-2/7)*(1-3/7)*...*0...*(1-2019/7)=0
P=(1-1/7)*(1-2/7)*(1-3/7)*......*(1-2019/7)=(1-1/7)*(1-2/7)*(1-3/7)*...*(1 - 7/7)...*(1-2019/7)
=(1-1/7)*(1-2/7)*(1-3/7)*...*0...*(1-2019/7)=0
Tính(1-1/7)*(1-2/7)*(1-3/7)*(1-4/7)*...*(1-2019/7)
P=(1-1/7)*(1-2/7)*(1-3/7)*......*(1-2019/7)
P=(1-1/7)*(1-2/7)*(1-3/7)*......*(1-2019/7)
Câu 1: Cho A.= \(\frac{7^{2018}+1}{7^{2019}+1}\)Và B=\(\frac{7^{2019}+1}{7^{2019}+1}\)
So sánh A và B
So sánh hai số A và B biết :
A = \(-\frac{1}{2020}-\frac{3}{2019^2}-\frac{5}{2019^3}-\frac{7}{2019^4}\)
B = \(-\frac{1}{2020}-\frac{7}{2019^2}-\frac{5}{2019^3}-\frac{3}{2019^4}\)
Help me , pleaseeeeeeeeee
Cho \(A=1+7+7^2+7^3+...+7^{2019}+7^{2020}\)
Tìm số dư khi chia A cho 19.
cho a= 1/1!+1/2!+1/3!+1/4!+...+1/2019! cm a<7/4
A=1/3^2+1/5^2+1/7^2+...+1/2019^2 chung minh A<1/4
So sánh C=1/1!+1/2!+1/3!+.....+1/2019! với 7/4