Which number should replace the question mark?

There is a square piece of paper with a hole that is denoted by the circle on the top right side in the given picture. You have to cut the paper in a manner that it forms two and only two separate pieces of paper and then rearrange the pieces in a manner that the holes come in the centre of the paper.

Can you identify the direction in which this bus is moving; left or right?

Hint: The bus is moving on the roads of London.

It has a long neck, A name of a bird, Feeds on cargo of ships, It's not alive,

What is it?

A mathematics teacher took exams for his students. Out of the total students, 25% passed both the tests included in the exam. However, only 42% were able to clear the first test.

Can you find out the percentage of those students who passed the first test and also passed the second test?

A rubber ball keeps on bouncing back to 2/3 of the height from which it is dropped. Can you calculate the fraction of its original height that the ball will bounce after it is dropped and it has bounced four times without any hindrance ?

Baseball bat and ball cost $100. If the bat cost $99 more than the ball, what is the cost of each?

13 decks of cards have been mixed. What is the minimum number of cards that must be taken out from the above-mixed cards to guarantee at least one 'four of a kind?

What question can you never answer yes to?

What kind of band never plays music?