\(1\frac{1}{3}x1\frac{1}{8}x1\frac{1}{15}x1\frac{1}{24}x....x1\frac{1}{99}\)
= 4/3 x 9/8 x 16/15 x 25/24 x ... x 100/99
= 2x2/1x3 x 3x3/2x4 x 4x4/3x5 x 5x5/4x6 x .... x 10x10/9x11
= 2x3x4x5x...x10/1x2x3x4x...9 x 2x3x4x5x..x10/3x4x5x6x...x11
= 10 x 2/11
= 20/11
=