Name one eight-letter word with 'kst' in the middle, 'in' the beginning, 'and' at the end.?

Replace the question mark with the correct number.

Seven Robbers robbed a bank and hide the coins in a lonely place.
They decide to divide the money equally the next morning. Two greedy robbers decided to cheat the others and reach the place at night. They equally divided the coins between them, one coin left. So they called another robber and then they decided to divide equally among the three. Sadly again one coin left. The same thing happened to the 4th 5th and the 6th robber.
However, when the 7th robber reached in the morning, they can divide the coins equally.

How many coins were there in total?

I inserted a coin in a bottle and closed its mouth with the help of a cork. Now, I was able to take the coin out from the bottle without taking out the cork or breaking the bottle. Can you tell me how I did it?

Take 9 from 6, 10 from 9, 50 from 40, and leave 6.

How Come ??

Which number should replace the question mark?

I never stop running even when I standstill. If I am formed by joining two identical bodies together, can you guess who I am?

What is the fewest number of coins that would be required in order to make sure each and every coin touches exactly three other coins?

He does not have any heart but still, He manages to live.
If you kill him, you will eventually die but yet you kill him.
He cannot run, who is He?

A cricket has 6 legs, a squirrel has 4 legs and a spider has 8 legs.

In a local zoo, it was found that the total number of legs is 612. Also, there are equal number of each of the above animals/insects.

Can you find out how many animals are there in the zoo?