Our product and our sum always give the same answer. Who are we?

Can you find the ages of a son, father and grandfather based on the following facts?
The sum of the ages of grandfather, father and son is 140 years.
The age of the son in months is the same as the grandfather in years.
The age of the son in days is the same as the father in weeks.

Complete the series by replacing "?" with the correct number.

ST ND RD TH '?'

You see a boat filled with people, yet there isn’t a single person on board. How is that possible?

You need to pick one entry from pot A and one from pot B to have a perfect match. Can you do it?

What can you hold in your right hand, but never in your left hand?

If two's company, and three's a crowd, then whats four and five ?

Considering the below equation:

V + II - VI = 10
IV - X + VIII = 20
IV - VII + VI = 30

Then, I + II + III = ?

A man desired to get into his work building, however he had forgotten his code.
However, he did recollect five pieces of information
* Fifth number + Third number = 14
* The fourth number is one more than the second number.
* The first number is one less than twice the second number.
* The second number and the third number equals 10.
* The sum of all five numbers is 30.

What is the code ?

If,

Akriti = 631
Levis = 521
Sroti = 521
Aneel = 533
Then,
Sunil =?