5 out of 10 marbles are bule
If the first marble is blue and is not replaced, there are 9 marbles left with 4 blue marbles
And therefore, the probability will be:
\(\frac{5}{10}\) × \(\frac{4}{9}\)
=\(\frac{20}{90}\)
It can be simplified further:
=\(\frac{2}{9}\)
