A professor thinks of two consecutive numbers between 1 and 10.
'A' knows the 1st number and 'B' knows the second number

A: I do not know your number.
B: Nor do I know your number.
A: Now I know.

What are the four solutions for this?

I sleep during the day and fly at night, but I have no feathers to aid my flight. What am I?

I travel all around the world but always stay in the corner. What am I?

In the Chess Board picture below white army is arranged. You need to add a black army on the board such that no piece is under any threat.
Note: Army comprised of 1 king, 1 queen, 2 rooks, 2 bishops, 2 knights, and 8 pawns.

A train leaves from point A for point B at 80 mph. After half an hour, another train leaves from point B for point A at 60 mph.

Which of the trains will be farther from point A when they meet ?

How can you spell "White of an egg" in one word?
Hint: I know you can spell coke, poke, and joke.

What comes
Once in a Year
Twice in a Month
4 times in a Week
6 times in a Day

What does below science rebus mean?

Ag Ag Ag
Ag SPOON Ag
Ag Ag Ag

John was piloting a plane behind a car but was never able to overtake it. Why?

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?