A = \(\dfrac{101+100+98+97+...+3+2+1}{101-100+99-98+...+3-2+1}\)
= \(\dfrac{\left(101+1\right).101:2}{1+1+1+...+1}\)
= \(\dfrac{5151}{101}\) = 51
a. A= (101+100+99+98+97+....+3+2+1) : (101-100+99-98+....+3-2+1)
b, B=(3737.43 -4343.37) : (2+4+6+....+100)
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
A = \(\frac{101+100+99+98+97+...+3+2+1}{101-100+99-98+97-...+3-2+1}\)
Mik đố các bạn làm được :))
A=101+100+99+98+...+3+2+1/101-100+99-98+...+3-2+1
a. A= (101+100+99+98+97+....+3+2+1) : (101-100+99-98+....+3-2+1)
b, B=(3737.43 -4343.37) : (2+4+6+....+100)
101+100+99+98+...+3+2+1/101-100+99-98+...+3-2+1
B=(101+100+99+98+.....+3+2+1) / (101-100+99-98+.......+3-2+1)
B=(101+100+99+98+.....+3+2+1) / (101-100+99-98+.......+3-2+1)
A] 101-100+99-98+.......+3-2+1
B] 101+100+99+98+.......+3+2+1
