Why Aeroplane windows are round?

On a charity event in Russia, Murray beat Djokovic by winning six games and losing three games.
Note: There is a total of 5 service breaks(one who serve lost the game).
Who served first, Djokovic or Murray?

Can you find the odd one out from the below words ?

First Second Third Forth Fifth Sixth Seventh, Eighth Nine Ten Eleven Twelve.

Spelt forwards I’m what you do every day, spelled backwards I’m something you hate. What am I?

Make eight squares by moving only two matchsticks.
Note- Square can be of different sizes.

Which five letter word can be added at the end of below word to form a
valid word?

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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.

Find out a multi-digit number that if multiplied by the number 9 or any of its multiplications products (i.e. 18, 27, 36, 45,..) will result in the multiplication factor repeated (n) number of times.

Optical Illusion: People with hawk eyes can spot a different car in 5 seconds. Can you? Test your vision now!

They came out at night, without being called.
They lost at day, without being stolen.
Who are they?