MHT CET 2019 Math Solved Paper

Total number of balls = 10.
No. of ways of drawing 2 balls out of 10=10C2=45
No. of ways of drawing 2 white balls out of 6 =6C2=15
No. of ways of drawing 2 black balls out of 4 =4C2=6
required probability=

15+6

45

=

21

45

=

7

15