A bag contains $3$ red and $7$ black balls, two balls are taken out at random, without replacement. If the first ball taken out is red, then what is the probability that the second taken out ball is also red
A bag contains $3$ red and $7$ black balls, two balls are taken out at random, without replacement. If the first ball taken out is red, then what is the probability that the second taken out ball is also red
- A
$\frac{1}{{10}}$
- B
$\frac{1}{{15}}$
- C
$\frac{3}{{10}}$
- D
$\frac{2}{{21}}$
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