![](https://rs.olm.vn/images/avt/0.png?1311)
Hãy nhập câu hỏi của bạn vào đây, nếu là tài khoản VIP, bạn sẽ được ưu tiên trả lời.
![](https://rs.olm.vn/images/avt/0.png?1311)
![](https://rs.olm.vn/images/avt/0.png?1311)
![](https://rs.olm.vn/images/avt/0.png?1311)
![](https://rs.olm.vn/images/avt/0.png?1311)
P = 50 + 51 + 52 + .... + 52016
5P = 5( 50 + 51 + 52 + .... + 52016 )
= 51 + 52 + 53 + .... + 52017
5P - P = ( 51 + 52 + 53 + .... + 52017 ) - ( 50 + 51 + 52 + .... + 52016 )
4P = 52017 - 1
=> P = ( 52017 - 1 ) : 4
=> Q - P = 52017 : 4 - ( 52017 - 1 ) : 4
= [ 52017 - ( 52017 - 1) ] : 4
= ( 52017 - 52047 + 1 ) : 4
= 1/4
![](https://rs.olm.vn/images/avt/0.png?1311)
![](https://rs.olm.vn/images/avt/0.png?1311)
![](https://rs.olm.vn/images/avt/0.png?1311)
![](https://rs.olm.vn/images/avt/0.png?1311)
Q = 51 + (52+ 53 + 54) + (55 + 56 + 57) + ....+ (52015 + 52016 + 52017)
Q = 5 + 52.(1 + 5 + 52) + ....+ 52015 .(1 + 5 + 52)
Q = 5 + 52.31 + ...+ 52015.31
Q = 5 + 31.(52 + ...+ 52015)
=> Q chia cho 31 dư 5
bài làm
Q = 51 + (52+ 53 + 54) + (55 + 56 + 57) + ....+ (52015 + 52016 + 52017)
= 5 + 52.(1 + 5 + 52) + ....+ 52015 .(1 + 5 + 52)
= 5 + 52.31 + ...+ 52015.31
= 5 + 31.(52 + ...+ 52015)
Vậy................
hok tốt
![](https://rs.olm.vn/images/avt/0.png?1311)
Ta có : D = 1 + 5 + 52 + ...... + 52017
=> 5D = 5 + 52 + 53 + ...... + 52018
=> 5D - D = 52018 - 1
=> 4D = 52018 - 1
=> D = \(\frac{5^{2018}-1}{4}\)
\(P=5^0+5^1+5^2+...+5^{2016}\)
\(5P=5+5^2+...+5^{2017}\)
\(\Rightarrow5P-P=5^{2017}-1\)
\(\Rightarrow P=\frac{5^{2017}-1}{4}\)
\(\Rightarrow Q-P=\frac{5^{2017}}{4}-\frac{5^{2017}-1}{4}=\frac{1}{4}\)
P = 5^0+5^1+5^2+..+5^2016
5P = 5^1+5^2+5^3+...+5^2017
5P-P = (5^1+5^2+5^3+...+5^2017) - (5^0+5^1+5^2+..+5^2016)
4P = 5^1+5^2+5^3+...+5^2017-5^0-5^1-5^2-...-5^2016
4P = 5^2017-1
P = (5^2017-1):4
=> Q-P = 5^2017:4 - (5^2017-1) : 4
= (5^2017 - 5^2017 -1) : 4
= (-1) : 4 = -1/4
Vậy...
Chúc em học tốt!!!