Find the hidden tiger in the given optical illusion ?

Find The Next Number in this series.
1, 2, 6, 42, 1806 ?

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

As a whole I am both
safe and secure.

Behead me and I become
a place of meeting.

Behead me again and I am
the partner of ready.

Restore me, and I become
the domain of beasts.

What am I?

You have two buckets of 11 liters and 6 litres.
How can you measure exactly 8 litres?

Two old friends, Jack and Jill, meet after a long time, and discussing as:

Jack: Hey, how are you, man?

Bill: Not bad, got married and I have three kids now.

Jack: That's awesome. How old are they?

Bill: The product of their ages is 72 and the sum of their ages is the same as your birth date.

Jack: Cool..But I still don't know.

Bill: My eldest kid just started taking piano lessons.

Jack: Oh, now I get it.

How old are Bill's kids?

A woman named Maria was at the funeral of her mother. She met a nice young man that she had never seen before and after the service, they spent a bit of time together. Then she got busy and didn’t get his name or phone number before he left. She tried to find him, but no one knew who he was or how to contact him. A few weeks later, Maria’s older sister dies and the police suspect murder. Who killed the sister?

Who is generally closer to the kids, mom or dad?

(it's a funny riddle)

What is in seasons, seconds, centuries and minutes but not in decades, years or days?

Can you find the mistake in the below statement?