If nine thousand, nine hundred nine dollars is written as $9,909, how should twelve thousand, twelve hundred twelve dollars be written?
If 21x = 79x, what is the value of x?
I am a number I am not an odd number I am higher than 90 I am not higher than 100 If you subtract me from 100, you get nothing. What number am I?
Replace the question mark with the correct number in below Picture:
A girl has as many brothers as sisters, but each brother has only half as many brothers as sisters. How many brothers and sisters are there in the family?
Quickly Solve this riddle 7 - 4 + 3 * 0 + 1 = ?
You have a roll of cloth 1km long. You have a machine which cuts this roll into pieces of 10-meter-long cloth. How long would it take for the machine to cut the roll if each cut took 4 secs?
I am an odd number. Take away a letter and I become even. What number am I?
John can place six large boxes or nine small boxes into a carton. Can you find out in how many cartons can he place sixty-six boxes in total?
Can you find out the remainder when 3^300 is divided by 5?
Can you find a number that lies one third of the distance between 1/3 and 2/3?
In the 1920s, people feared that crossword puzzles would contribute to illiteracy.
