Can you fill the blank with the correct number?

6 30 870 756030 _____

How can you write nineteen in a manner that if we take out one, it becomes twenty?

The more it dries, the wetter it becomes. Can you tell what it is?

There are three Athletes (John, Tarun and Harish) and their individual Coaches (Jacob, Meenaxi and Priyanka) standing on the shore.
No Coach trusts their Athlete to be near any other Coach unless they are also with them.
There is a boat that can hold a maximum of two persons.
How can the six people get across the river?

Which fur should we be getting from the Lion?

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?

A pond had 60 fish, out of which, all but 20 died.
How many fishes are now present in that pond?

Make a sentence consisting of three words that have the whole alphabet.

John is a strange liar.

He lies on six days of the week, but on the seventh day, he always tells the truth.

He made the following statements on three successive days:

Day 1: "I lie on Monday and Tuesday."
Day 2: "Today, it"s Thursday, Saturday, or Sunday."
Day 3: "I lie on Wednesday and Friday."

On which day does John tell the truth?

Solve the mathematical equation in the picture below.