A bag contains 8 balls, whose colours are either white or black.… | JEE Main 2024 Mathematics PYQ

MCQMediumJEE Main 2024 · 1 February, Shift 1Conditional Probability & Bayes Theorem

A bag contains $8$ balls, whose colours are either white or black. $4$ balls are drawn at random without replacement and it was found that $2$ balls are white and other $2$ balls are black. The probability that the bag contains equal number of white and black balls is:

A
$\frac{2}{5}$
B
$\frac{2}{7}$
C
$\frac{1}{7}$
D
$\frac{1}{5}$

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