How many pluses should we put between the digits of 987654321 to get a total of 99, and where?
A network of 20 x 10 squares is given to you. Can you calculate how many unique squares and rectangles can be formed combining two or more individual squares ?
The square root of number 121 is "11". What is the square root of the number "12345678987654321."?
I can write cow in 13 letters. Can You?
As we know that white starts the game of chess. Can you find the scenario shown in the picture below is possible when all the white pieces are at the original place while the black pawn is not as in the below picture?
Astrology starts with the alphabet A, Biology starts with B, Psychology with P and Limnology with L. Can you find an "ology" that begins with a P?
How is the moon similar to a dollar?
When it is alive we sing, when it is dead we clap our hands. What is it?
A man dies of old age on his 25 birthday. How is this possible?
Arrange the numbers 1, 2, 3, 4, 5, 6, 7, 8 and 9 above and below the division line in a manner that the thus formed fractions equal to 1/3. (You can use one number only once)
You measure my life in hours I serve you by expiring I vanish faster when I am thin and slower when I am thick The wind is my energy What am I?
In the 1920s, people feared that crossword puzzles would contribute to illiteracy.
