You see a boat filled with people, yet there isn’t a single person on board. How is that possible?

What do you answer even though it never asks you questions?

Which is the rope you never skip with?

If eleven plus two equals one, what does nine plus five equal?

Can you count the number of seconds in a year?

Clue: You need to bother about calculation.

I am thinking of a five-digit number such that:
The first and last digits are the same, their submission is an even number and multiplication is an odd number and is equal to the fourth number. Subtract five from it and we obtain the second number. Then divide into exact halves and we get the 3rd number.

What number I am thinking of?

Can you solve this tricky maths equation problem by replacing it? mark with the correct symbol?

19834 -----: 187
15921 -----: 153
17561 -----: 139
13734 -----: ???

What breaks yet never falls, and what falls yet never breaks?

I am a seven-letter word but if you remove four of my letters I will have one left. What word am I?

You knock a Table over in the library, and suddenly 20 eyes are looking at you.