How do you go from 98 to 720 using just one letter?

What is the relationship between these matchstick pictures below?

Find the next number in the following series:
6, 14, 26, 98, __?

If Rajina's daughter is my daughter's mom, who am I to Rajina?

I am the one who remains awake when you sleep. But I need to rest when you awake. Who Am I?

Distances from you to certain cities are written below.

BERLIN 200 miles

PARIS 300 miles

ROME 400 milesAMSTERDAM 300 miles

CARDIFF ??? miles

How far should it be to Cardiff ?

Who are the happiest people in IPL match?

I don't get anymore wetter, no matter how much rain falls on me.

The following sentence is false. The preceding sentence is true.
Are these two sentences true or false?

On a special event at the prison, 5 prisoners John, Jacob, Krist, Tang, and Dang given a chance to go to a sauna and can bring one thing with them.

Following are the things that the prisoners bring with them.
John: A soda
Jacob: Thermos
Krist: Book named "How to kill"
Tang: A Walkman
Dang: Harmonica

Since it is a Sauna, no one can see each other. After a while When the steam is switched, Tang was found dead and there was blood all around.
J Bond was called and he instantly come to know who can be the murderer. How?