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

Can you find the 09 errors in the picture below?

What Deficiency does the below rebus represent?

VIT_MIN

Find the next number in the sequence

5 12 24 36 ?

Role Action
Block Prevents the target player from acting
Redirect Change target player target.
Save Protects the target player from death.
Seer Sees all actions that occurred
Murderer Kills the target player

The following five players are playing:

Andy
Brian
Chris
Daniel
Fred

You are Andy the Seer and you saw the following things:
a) Brian was redirected to Chris.
b) Chris was blocked.
c) Daniel was killed.

Who is the murderer then?

I am a prime number.
The double of myself is equal to the square of me.

which number am I?

What's the next in the series?

H, Be, F, S, Mn, Kr, In, Gd, Tl, ?

Make eight squares by moving only two matchsticks.
Note- Square can be of different sizes.

Can you solve the below rebus?

Transform the word THINK into BRAIN while changing only one letter at a time in a manner that each of the word in the process is a real word!!!