KCET 2015 Math Solved Paper

Number of red marbles are 6 (1 to 6), number of white marbles are 4 (12 to 15). So,
R1, R2, R3, R4, R5, R6, W12, W13, W14, W15
Total number of marbles are 10.
We have, white + odd = W13, W15
So, required probability is

2

10

=

1

5