1) Tính
A= 3/4.8/9.15/16...9999/10000
B= (1-1/4).(1-1/9)...(1-1/1000)
tinh 3/4.8/9.15/16....9999/10000
Cho A= 3/4.8/9.15/16. ... .9999/10000. Tìm 200A
3/4.8/9.15/16......9999/10000
tinhs tổng nha
Tính các tích sau:
A= 3/4.8/9.15/16...9999/10000
B=(1-1/4).(1-1/9)...(1-1/10000).
C=(1+1/1.3)(1+1/2.4)(1+1/3.15)....(1+1/99.100).
3/4.8/9.15/16....9999/10000
giup mik vs
Tính nhanh
a) A=3/4.8/9.15/16.....9999/10000
b)B=10/56+10/140+10/260+......+10/1400
bài 1. tính
a, (1-1/4).(1-1/9)...(1-1/10000)
b, 3/4.8/9...9999/10000
c, 3-1/5+3/10/2+1/4-3/5
d, 2/3+2/5+2/17-2/293/3/7+3/5+3/17-3/293
thực hiện phép tính rồi rút gọn
A=\(\left(\frac{4}{9}+\frac{5}{6}\right):\left(\frac{7}{8}-\frac{7}{12}\right)\)
B=\(\frac{3}{4}.\frac{8}{9}.\frac{15}{16}...\frac{9999}{10000}\)
C=\(\left[3-\frac{1}{5}+\frac{3}{10}\right]:\left(2+\frac{1}{4}-\frac{3}{5}\right)\)
