Find the next number in the sequence

1, 2, 6, 21, 88, __?

What building has the most stories?

John is found dead in a bare field. Nobody killed John,
John did not commit suicide.

Inspector Jacob found a bag just a few meters away from John which could save his life. What was in the bag?

What word begins and ends with an E, but has only one letter?

You can see it everyday, But cannot touch it at will. What is it?

By removing one matchstick and adding one matchstick, can you convert the word "ZOO" to an animal name?

An exterior architect is asked by a builder to plant seven trees in a manner that there are exactly six rows of trees in a straight line and each row has three trees in particular.

How will he do it?

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 runs around the whole yard without moving?

What does below science rebus mean?

Ag Ag Ag
Ag SPOON Ag
Ag Ag Ag