Violympic toán 6
Các câu hỏi tương tự
bài) Tính
a) 75%+1,2-2+1/5+20180
b) (-4/3+0,75) :2017/2018+(1+1/3-75%) :2017/2018
c) (2018-1/3-2/4-3/5-4/6-...-2018/2020) : (1/15+1/20+1/25+1/30+...1/10100)
bài) Tính
a) 75%+1,2-2+1/5+20180
b) (-4/3+0,75) :2017/2018+(1+1/3-75%) :2017/2018
c) (2018-1/3-2/4-3/5-4/6-...-2018/2020) : (1/15+1/20+1/25+1/30+...1/10100)
Cho A=1/2+1/3+1/4+...+1/2019 và B=2018/1+2017/2+...+2/2017+1/2018. So sánh A/B với 1/2018
so sanh A va B
A=2017^100 / 1+2017+2017^2+2017^3+...+2017^100
B=2016^100 / 1+2016+2016^2+2016^3+...+2016^100
từ 1 cho đên 2017 co bao nhieu stn chia het cho 2 nhung k chia het cho 3
Cho A = 1 - 1/2 + 1/3 + 1/4 + .... + 1/2017 +1/2018 + 1/2019
B = 1/1010 + 1/1011 + 1/1012 + .... + 1/2017 + 1/2018 + 1/2019
Tính (A-B-1)2019
8.Find the value of 1+2+3+4+5+...+2016+2017+2016+2015+...+3+2+1.
1: \(\dfrac{1}{2}\cdot\left(1+2\right)+\dfrac{1}{3}\cdot\left(1+2+3\right)+\dfrac{1}{4}\cdot\left(1+2+3+4\right)+...+\dfrac{1}{2017}\cdot\left(1+2+3+...+2017\right)\)
2: tính hợp li
a, \(44\cdot82-20^2+18\cdot44\)
b, \(\left(6^{10}:6^8\right):\left\{780:\left[78\cdot5-\left(125\cdot7^2\right)+13\cdot5\right]\right\}\)
B = \(\dfrac{1}{2^2}+\dfrac{1}{2^3}+.......+\dfrac{1}{2^{2017}}+\dfrac{1}{2^{2018}}\)
tính B