Question

2>Tính: (-1 1/15)x(-1 1/16)x (-1 1/17)x....x(-1 1/1994)

Answer 1

\(\left(-1\frac{1}{15}\right).\left(-1\frac{1}{16}\right).\left(-1\frac{1}{17}\right).........\left(-1\frac{1}{1994}\right)\)

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Answer 2

\(=\left(-\frac{16}{15}\right)\left(-\frac{17}{16}\right).....\left(-\frac{1995}{1994}\right)\)

\(=\frac{\left[\left(-16\right)\left(-17\right)....\left(-1994\right)\right]1995}{\left[16.17.....1994\right].15}=\frac{-1995}{15}=-133\)