A certain street contains 100 buildings. They are numbered from 1 to 100. How many 9's are used in these numbers?
What can you deduce from the following BrainBat? CRY LMKI
Can you replace the X (both small and big x) with the numbers between 1 to 19 such that all the rows of 3 numbers between X (big x) sum to 23?
Make the seating arrangement of 10 children in such a way that there are 5 rows with 4 children in each row.
What does this rebus means ? PROG WORKRESS
What number do you get when you multiply all of the numbers on a telephone's number pad?
Find three whole, positive numbers that have the same answer when multiplied together as when added together.
The centre of the third figure is empty. What digit should fit inside?
Which tank will fill first?
Why did Navjot Singh Sidhu put the new January calendar in the freezer
John killed hundreds of people mercilessly and yet the police were not able to put her behind the bars. Why?
In 2007, a puzzle was released and $2 million prizes were offered for the first complete solution. The competition ended at noon on 31 December 2010, with no solution being found. Wiki
