Question

Answer 1

\(=\dfrac{1995}{1997}\cdot\dfrac{1997}{1994}\cdot\dfrac{1993}{1995}\cdot\dfrac{1990}{1993}\cdot\dfrac{997}{995}\)

\(=\dfrac{1990}{1994}\cdot\dfrac{997}{995}=1\)

Answer 2

`1995/1997 xx 1990/1993 xx 1997/1994 xx 1993/1995 xx 997/995`

`= (1995xx1990xx1997xx1993)/(1997xx1993xx1994xx1995) xx 997/995`

`= 1990/1994 xx 997/995`

`= (995 xx 2)/(997 xx2) xx 997/995`

`= (995 xx2 xx 997)/(997 xx 2 xx 995)`

`= 1`