Decode this picture on T-Shirt and tell what it says ?

What is the next number in this series?

4,12,84,3612....

On 26-01-2022, Juli was murdered at her house in a city in India in the afternoon. There were three suspects in the murder and the following are the statements that were given by them:

John: I visited my village that day.
Jacob: I was out to deposit my house tax in the municipality office at that time.
Jonny: I was at a friend's place having lunch at that time.

Can you find out who is the murderer?

John is the son of Jacob.
So,
Jacob is the_____of John's father?

He loves to dance, twist and prance, he shakes his tail, and as a way he sails, wingless he flies into the sky. What is he?

A man is shown a portrait painting. He looks closely, then tells, “Brothers and sisters have I none, but that man’s father is my father’s son!” Who is the man in the portrait?

There is a place where if I stand up straight, I will still be considered sideways.

Can you name some countries which do not have the alphabet 'A' in them?

There is something which you can be arrested for attempting but not for successfully completing.

What does the following BrainBat signifies?

ABCDEFGHIJKLMNOPQRSTUVWYZ

QQQQQQQQQQQQQQQQQQQQQQQQQ.