Question

Tính 

C=(1/2+1).(1/3+1).(1/4+1)...(1/99+1)

 

Answer 1

 1/2+1).(1/3+1).(1/4+1).....(1/98+1).(1/99+1)

= 3/2.4/3.5/4......99/98.100/99

=100/2

Answer 2

 1/2+1).(1/3+1).(1/4+1).....(1/98+1).(1/99+1)

= 3/2.4/3.5/4......99/98.100/99

=100/2