How many bricks does it take to complete a building that is 15 feet wide, 30 feet deep, and 12 feet tall made of brick?

You have two buckets of 11 liters and 6 litres.
How can you measure exactly 8 litres?

Analyze and find the missing item in the sequence:
16, 06, 68, 88, __, 98

Can you find a seven digit number which describes itself. The first digit is the number of zeros in the number. The second digit is the number of ones in the number, etc. For example, in the number 21200, there are 2 zeros, 1 one, 2 twos, 0 threes and 0 fours.

Can you find out the smallest number that can be conveyed as the sum of three squares in three unique ways?

If nine thousand, nine hundred nine dollars is written as $9,909,
how should twelve thousand, twelve hundred twelve dollars be written?

If you read clockwise, you can form a word by inserting three missing letters in the picture given below. Can you do it?

John is 45 years older than his son Jacob. If you find similarities between their ages, both of their ages contain prime numbers as the digits. Also, John's age is the reverse of Jacob's age.

Can you find their ages?

Complete the series by replacing "?" with the correct number.

ST ND RD TH '?'

You have four chains. Each chain has three links in it. Although it is difficult to cut the links, you wish to make a single loop with all 12 links. What is the fewest number of cuts you must make to accomplish this task?