Divide 110 into two parts so that one will be 150 per cent of the other. What are the 2 numbers?

What brings you down but never up?

If eleven plus two equals one, what does nine plus five equal?

Look at the below sequence of letters and tell us what the next letter should be:

O T T F F S S ?

I live in a bowl. I can swim. I have a tail. I also have fins and big eyes. What am I?

Alpha is Beta's sister.

Gamma is a Beta mother.

Delta is Gamma's father.

Tango is Delta's mother.

Then,

How is Alpha related to Delta?

Nine marbles are arranged in the image below. Can you slide two marbles to form a square?

In a secret society, a buried chamber can be accessed only via a secret password. The password is seven characters long and comprises of just letters and numbers.

You find a code that can help you in cracking the password. The code says "You force heaven to be empty".

Can you deduce the password from that?

Three people check into a hotel. They pay $60 for the rent of the room. After they check-in, the manager realize that the rent for the room is $55. So, he gives $5 to the bellboy and asks him to give it to them. The bellboy thinks that it will be difficult for the three people to share $5 among them and seeking the personal benefit, he pockets $2 and gives the remaining $3 to them.

Now, each person paid $20 and got back $1. In this manner, each of them paid just $19 which totals to the amount of $57. The bellboy has $2 with him and adding them, we get $59. So where is the remaining $1?

What does the below rebus puzzle mean?