

Correct ans is A and B are independent events.
The first marble can go in any of the four pockets and so can the second and third marble.
Hence the total number of ways that three marbles can go in four pockets is 4 × 4 × 4 = 64 .
Divisible by 30. Not possible.
Leap year has 52 weeks + 1 day If the first week of year start with Monday then the year will end on Monday, hence, there will be 52 Tuesdays and 53 Mondays