What does below Rebus say?

XLR8

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

What number comes next in the series?

5 15 5 18 5 24 14 20 _

If you had an infinite supply of water and 5-quart and 3-quart pails, how would you measure exactly 4 quarts? What is the least number of steps you need?

What 4-letter word can be written forward, backward or upside down, and can still be read from left to right?

A pond had 60 fish, out of which, all but 20 died.
How many fishes are now present in that pond?

Do you know of a place where the wind blows south and then suddenly shifts direction towards the north?

Can you find a pattern and the missing number in the series given below?

100, 155, 258,? , 584, 819.

Can you replace the question mark with the correct number?

Using four sevens (7) and a one (1) create the number 100. Except for the five numerals, you can use the usual mathematical operations (+, -, x, :), root and brackets ()