Tính nhanh
a)A=\(\frac{101+100+99+98+...+3+2+1}{101-100+99-98+...+3-2+1}\)
b)\(\frac{3737.43-4343.37}{2+4+6+...+100}\)
Tính nhanh: \(\frac{101+100+99+98+..+3+2+1}{101-100+99-98+...+3-2+1}\)
Tính A =\(\frac{101+100+99+98+......+3+2+1}{101-100+99-98+......+3-2+1}\)
Tính nhanh \(B=\frac{\frac{1}{2}+\frac{1}{3}+\frac{1}{4}+...+\frac{1}{99}+\frac{1}{100}}{\frac{99}{1}+\frac{98}{2}+\frac{97}{3}+....+\frac{1}{98}+\frac{1}{99}}\)
1 Tính
a) A=\(\frac{101+100+99+98+...+3+2+1}{101-100+99-98+...+3-2+1}\)
tính:
a) \(A=\frac{101+100+99+98+......+3+2+1}{101-100+99-98+........+3-2+1}\)
Tính nhanh
1/100 - 1/ 100 . 99 - 1/99 . 98 - 1/ 97 .98 - 1/ 97 .98 - ..- 1/ 3.2 - 1/2.1
Tính nhanh
a, 1-2+3-4+.....+2015-2016+2017
b,1+3-5-7+9+11+....+97-98-99+100+101
c,1-2-3+4+5-6-7+....+97-98-99+100+101
d,2^100-2^99-2^98-....-2-1
Nhanh nha m dang cần gấp
Tính:
a) A = \(\frac{101+100+99+98+...+3+2+1}{101-100+99-98+...+3-2+1}\)
b) B = \(\frac{423134.546267-423133}{423133.846267+423134}\)
