a)
1382-382
=(138-38)2
=1002=10000
b)29x31=899
c)1012=10201
a)
1382-382
=(138-38)2
=1002=10000
b)29x31=899
c)1012=10201
Tính nhanh: a) 1012 b) 752-50.75+252 c) 103.97
B= 1/2 + 1/3 - 1/4 +...- 1/2022 + 1/2023 C= 1/1012 + 1/1013+...+ 1/2022 + 1/2023
Tính: B-C
mọi người sửa nhanh giúp mik vs ạ
Tính C=(1/1.2+1/3.4+1/5.6+...+1/2017.2018)-(1/1010+1/1011+1/1012+...+1/2017)
Câu 1 : Tính:
a) \(\frac{4}{19.21}+\frac{4}{21.23}+\frac{12}{23.29}+\frac{4}{29.31}\)
1/1011*2020+1/1012*2019*...*1/2020*1011=
tính hộ tớ
1/1011*2020+1/1012*2019*...*1/2020*1011=
tính hộ tớ
1/1011*2020+1/1012*2019*...*1/2020*1011=
tính hộ tớ
A=1-\(\dfrac{1}{2}+\dfrac{1}{3}-\dfrac{1}{4}+...+\dfrac{1}{2017}-\dfrac{1}{2018}+\dfrac{1}{2019}\)
B=\(\dfrac{1}{1010}+\dfrac{1}{1011}+\dfrac{1}{1012}+...+\dfrac{1}{2019}\)
Tính \(^{\left(A-B\right)^{2019}}\)
viet duoi dang luy thua co so 10 cua 256.84 la
A 108
B 1012
C 1010