What number comes next in this sequence:
7 8 5 5 3 4 4 _

Krish is 45 years old and his mother Crishtina is 73 years old.

Can you find out how many years ago, his mother was three times his age?

A girl rode into a tourist spot out of the city on Thursday. She loved the place and decided to stay for a few days. She stayed for four days and then she left for back home on Thursday.

How can this be possible?

What has many keys but can’t open a single lock?

What is the last thing you take off before bed?

There are people and strange monkeys on this island, and you can not tell who is who (Edit: until you understand what they said - see below). They speak either only the truth or only lies.
Who are the following two guys?
A: B is a lying monkey. I am human.
B: A is telling the truth.

Sally lives in a place where six months of the year is mild summer and the temperature drops significantly the other six months. She owns a lake where there is a small island. She wants to build a house on the island and needs to get materials there. She doesn’t have a boat, plane, or anything to transport them to the island. How does Sally solve this problem?

Three doctors said that Bill was their brother. Bill says he has no brothers. How many brothers does Bill actually have?

I am quite hot but become too cold if you remove the first two letters. What am I?

Imagine you are in a room with no windows or doors. How will you get out?