25+50+100+...+102400
50+50+100+25+25-50=?
ai tick mk mk tick lại
đáp số 200
nhé Trần Thị Khánh Huyền
50+50-100+50+25-25=?
ai k mk mk k lại
50+50-100+50+25-25= 50
k mk nha bn rùi mk k lại
50 + 50 - 100 + 50 + 25 - 25 = 50
Đúng nhaLưu Gia Huy
50+50-100+50+25-25=100-100+50+25-25
=0+50+25-25
=50+25-25
=75-25
50
ủng họ mk nha
tính nhanh 50+50/3+25/3+20/4+10/3+100/6.7+...+100/98.99
tính
100 - 100 : [ 0,4 x 250 - ( 100 - 50% x 50 ) + 25 ]
giuppppppppppppppppppppppppppppppp mình với với gấp lắm
\(100-100:\left[0,4\times250-\left(100-50\%\times50\right)+25\right]\)
\(=100-100:\left[100-\left(100-25\right)+25\right]\)
\(=100-100:25=100-4=96\)
tính A=50+50/3+25/3+10/4+10/3+100/6.7+100/7.8+...+100/98.99+1/99
\(A=\dfrac{100}{1\cdot2}+\dfrac{100}{2\cdot3}+\dfrac{100}{3\cdot4}+...+\dfrac{100}{99\cdot100}\)
\(A=100\cdot\left(\dfrac{1}{1\cdot2}+\dfrac{1}{2\cdot3}+\dfrac{1}{3\cdot4}+...+\dfrac{1}{99\cdot100}\right)\)
\(A=100\cdot\left(1-\dfrac{1}{2}+\dfrac{1}{2}-\dfrac{1}{3}+\dfrac{1}{3}-\dfrac{1}{4}+...+\dfrac{1}{99}-\dfrac{1}{100}\right)\)
\(A=100\cdot\left(1-\dfrac{1}{100}\right)\)
\(A=100\cdot\dfrac{99}{100}\)
A=99
24+1+25+50+100+100=
24+1+25+50+100+100=300
nếu ai k mik 3 cái mik sẽ k lại
24 + 1 + 25 + 50 + 100 + 100 = 300
k mk nha
Tính:
\(\frac{75^{50}.2^{100}}{100^{50}.9^{25}}\)
\(\frac{\left(3\times5^2\right)^{50}\times2^{100}}{\left(2^2\times5^2\right)^{50}\times\left(3^2\right)^{25}}\)=\(\frac{3^{50}\times5^{100}\times2^{100}}{2^{100}\times5^{100}\times3^{50}}\)=\(\frac{1\times1\times1}{1\times1\times1}\)=1
Tính tổng B=50+50/3+25/3+20/4+10/3+100/6.7+...+100/98.99+1/99
\(\Rightarrow A=\frac{600}{12}+\frac{240}{12}+\frac{100}{12}+\frac{60}{12}+\frac{40}{12}.\)
\(=\frac{2080}{12}=\frac{520}{3}.\)
\(\Rightarrow B=\frac{1}{2}\left(\frac{50}{6}-\frac{50}{7}\right)+.....+\frac{1}{2}\left(\frac{50}{89}-\frac{50}{99}\right)+\frac{1}{99}\)
\(=\frac{1}{2}\left(\frac{50}{6}-\frac{50}{7}+\frac{50}{7}-\frac{50}{8}+.................+\frac{50}{98}-\frac{50}{99}\right)+\frac{1}{99}\)
\(=\frac{1}{2}\left(\frac{50}{6}-\frac{50}{99}\right)+\frac{1}{99}\)
Từ A và C ta có \(B=\frac{520}{3}+\frac{1}{2}\left(\frac{50}{6}-\frac{50}{99}\right)+\frac{1}{99}\)
\(=\left(\frac{520}{3}+\frac{1}{99}\right)+\frac{1}{2}\left(\frac{50}{6}-\frac{50}{99}\right)\)
\(=\frac{17161}{99}+\frac{1}{2}x\frac{775}{99}\)
\(=\frac{17161}{198}+\frac{17161}{99}=\frac{17161}{198}+\frac{34322}{198}=\frac{17161}{66}\)
vậy biểu thức\(B=\frac{17161}{66}\)
Ta chia B thành 2 phần là A và C
Ta có :\(A=50+\frac{50}{3}+\frac{25}{3}+\frac{20}{4}+\frac{10}{3}\)
\(B=\frac{100}{6x7}+..........+\frac{100}{98x99}+\frac{1}{99}\)
TỪ NHA BN MK LÀM ĐÉN ĐÓ TÍ NỮA MK LÀM TIẾP H MK CÓ VIỆC BN ZÙI
tớ làm tiếp nhé xin các bn tha lỗi vì mình có chuyện đành dùng tạm nk này vậy
x + 25 x 4 = 50 x 50 x 100
x + 25 x 4 = 50 x 50 x 100
x + 25 x 4 = 250000
x + 25 = 250000 : 4
x + 25 = 62500
x = 62500 - 25
x = 62475
x + 25 x 4 = 50 x 50 x 100
x + 25 x 4 = 250000
x + 25 = 250000 : 4
x + 25 = 62500
x = 62500 - 25
x = 62475
\(x+25.4=50.50.100\)
\(x+25.4=250000\)
\(x+100=250000\)
\(x=250000-100\)
\(x=249900\)