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

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

A man is sitting in a bar when a rich man sits next to him. He turns to the rich man and says, “Did you know I know almost every song that has ever existed?”

The rich man laughs. The man then says, “I bet you all the money you have in your wallet that I can sing a genuine song with a lady’s name of your choice in it. The rich man laughs again and says, “OK, how about my daughter’s name, Jamie Armstrong-Miller?” Minutes later, the man collects his cash and the rich man goes home cashless. What song did the man sing?

What is the centre of gravity?

Two boys wish to cross a river. The only way to get to the other side is by boat, but that boat can only take one boy at a time. The boat cannot return on its own, there are no ropes or similar tricks, yet both boys manage to cross using the boat.

How?

I am never scared but became petrified and can’t live in a house but would die to make one. What am I?

You bought me for dinner but never eat me. What am I?

I have branches, but no fruit, trunk or leaves. What am I?

My location can be determined by the below rebus.
So where am i ?

A boy was locked in a room by some robbers. All that is in the room is a piano, a calendar, and a bed. The room is locked from the outside. What does he eat, drink, and how does he escape and get out?