What is both possible and impossible at the same time?

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

What is wrong in the below Picture?

Can you count the number of rectangles on a chessboard?

Can you replace the question mark with the correct number?

I am a normal creature, but I have five hands. I can even have more but even then I will be considered normal.

Who am I?

What can go up a chimney down, but can’t go down a chimney up?

A river should be crossed by a father, a mother and their two sons and two daughters.
There are some rules that should be followed while crossing the river. There can be only two people in the raft while crossing. The daughters cannot be with their father unless there is the presence of the mother. The sons cannot be with their mothers unless the father is present. Unless the guard is on the board, the criminals cannot be with any of the family members. Only the adults like the father, the guard, and the mother knows to use the raft.

How will they cross the river?

Spot the cat in the picture below

I throw two dice simultaneously.

What is the probability of getting a sum as 9 of the two numbers shown?