Replace the question mark with the number below given a simple math problem.

In a boat, the father of a sailor's son is sitting with the son of the sailor. However, the sailor is not present on the boat.

Can this even be possible?

I am an odd number. Take away a letter and I become even. What number am I?

What Does this text mean:

important=important

I am eight letters long - "12345678"
My 1234 is an atmospheric condition.
My 34567 supports a plant.
My 4567 is too appropriate.
My 45 is a friendly thank-you.
My 678 is a man's name.

What word am I?

Its something that each of us devours,
Not just us but birds, beats, trees, and flowers,
Frets iron and nibbles steel,
Toil hard stones to meal,
Exterminates king, collapse town,
And blows the mountains down.

Which Number is the odd one out?

A) 7145
B) 2716
C) 5321
D) 4135

Women do it once a year after they turn 19 but men get to do it only once in a lifetime. What is it?

In a fruit store, there was a unique weighing machine that was made to weigh only cherries and strawberries as they were priced the same.

Other fruits like watermelons or mango had different machines as they were expensive.

A man successfully buys watermelons at the price of cherries. How?

If you're 8 feet away from a door and with each move you advance half the distance to the door. How many moves will it take to reach the door?