Can you find out who is the kidnapper in below Picture and why, Explain ?

What's the only room from which no one can enter or leave

You need to cut a round cake into eight equal pieces with just 3 cuts. Can you do it?

Living above a star, I do not burn
Eleven friends and they do not turn
I can just be visited in a sequence, not once or repeatedly
PQRS are my initials
Can you tell my name accurately?

using four eights (8) and a one (1) and one mathematical symbol , create the number 100

A Miser man decided to go on a vacation for a month. He goes to the bank and asks for a trip loan of $500. The bank officer asks the man that the loan can only be approved when he mortgage some valuable thing at the bank. Miser man mortgages his only car whose worth was a whopping $80000. The Bank officer laughed at him and approve the loan instantly. After vacation when the miser man returns, the bank officer asked him "Are you an idiot, why is your mortgage such an expensive car for such a short loan?".

Miser man replied with some reason and the bank officer agreed that the miser man is actually not an idiot.

What did miser man reply to the bank loan officer?.

Your mother’s brother’s only brother-in-law is asleep on your couch. Who is asleep on your couch?

I welcome the day with a show of light, I stealthily came here in the night. I bathe the earthy stuff at dawn, But by noon, alas! I'm gone.

How many triangles are there in the picture below?

When we see 2 but call 10?