If Bihan is 10, Anirudha is 20, and Kim and Seal are both 5, but Rikold is 10, how much is Kenniger by the same trend?

A chess tournament is taking place on knock-out terms (the one who loses the match is out of the game).
(a) If 10 matches are played in total, how many players participated?
(b) If 20 players took part in the tournament, how many matches were played?

Let's play a word game. Following are some meaningless words that can be completed by adding random letters on either side of the word.

For example, the word "rdo" can be formed into "pardon".

Using the same technique, can you complete the given words?
ecalc
airb
rinci
tibac
uidel
gorit
igna
eyho

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

They do not possess flesh or feathers or scales or bone
But still, they are blessed with fingers and thumbs of their own.

What brings you down but never up?

Which word is least like the others? Third, fourth, fifth, sixth, seventh, eighth, ninth?

Two batsman each on 94 runs. Seven runs needed to win in last 3 balls. Both make 100*. How?

what's the probability of getting a king or a queen from a pack of 52 cards?

Which tank will fill first?