The square root of number 121 is "11". What is the square root of the number "12345678987654321."?
A seven-year-old kid challenged his classmates that he can make the number one disappear by adding something to it. How can he do that?
If there are fifteen crows on a fence and the farmer shoots a third of them, how many crows are left?
Count the number of lines in the image below ?
What Adam and Eve do not have but the rest of the people have?
What is the value of 1/2 of 2/3 of 3/4 of 4/5 of 5/6 of 6/7 of 7/8 of 8/9 of 9/10 of 1000?
Name one eight-letter word with 'kst' in the middle, 'in' the beginning, 'and' at the end.?
Buy me, smell me or deliver me, I do not change. Who am I?
No matter how little or how much you use me, you change me every month. What am I?
There is a box. The area of its top is 240 square units, the area of the front is 300 square units and the area of the end is 180 square units. Can you calculate the dimensions of this box with the given data?
I have no doors but I have keys, I have no rooms but I have space, you can enter but you can’t leave! What am I?
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
