A certain street contains 100 buildings. They are numbered from 1 to 100. How many 9's are used in these numbers?

Count the number of times the letter "F" appears in the following paragraph:

FAY FRIED FIFTY POUNDS OF
SALTED FISH AND THREE POUNDS
OF DRY FENNEL FOR DINNER FOR
FORTY MEMBERS OF HER FATHER'S FAMILY.

John was piloting a plane behind a car but was never able to overtake it. Why?

Always in you, Sometimes on you;

If I surround you, I can kill you.

What am I?

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

Can you name any English verb that becomes its past tense by simply rearranging the alphabets ?

There is a five-letter word which has 3 consonants(all are same) and 2 different vowels.
Also, something wrong is associated with the word.

Can you name it?

Twenty frogs are sitting on a log floating on the surface of a river. Two of them decide to jump off into the water.

How many frogs are there on the log at this moment?

If six children and two dogs were under an umbrella, how come none of them got wet?

I am a seven-letter word but if you remove four of my letters I will have one left. What word am I?