Answer
a. $0.327$,
b. $0.164$,
c. $0.515$
Work Step by Step
Total outcomes of getting 2 out of 19: $_{19}C_2$=171
Get 2 red out of 11: $_{11}C_2$=56, $p=56/171=0.327$
Get 2 black from 8: $_8C_2$=28, $p=28/171=0.164$
Get 1 red and 1 black: $11\times8$=88, $p=88/171=0.515$
This is an ambiguous question and can not be answered.
