3/4 x 8/9 x 15/16 x ... x 99/100 = ?
3/4 x 8/9 x 15/16 x ..... x 80/81 x 99/100
3/4 x 8/9 x 15/16 x.....x 80/81 x 99/100
3/4 x 8/9 x 15/16 x ... x 80/81 x 99/100
4/3 x 9/8 x 16/15 x 25/24 x...........x 100/99
4/3 x 9/8 x 16/15 x 25/24 x ... x 100/99
3/4 x 8/9 x 15/16 x...x 99/100
4/3 x 9/8 x 16/15 x 25/24 x ... x 100/99
tìm A biết : A=3/4 x 8/9 x 15/16 x.... x80/81 x 99/100