The square root of number 121 is "11". What is the square root of the number "12345678987654321."?
Our product and our sum always give the same answer. Who are we?
We know that the number 7 is the prime followed by a cube. Which next number is also a prime followed by a cube?
Look at this sequence from top to bottom. What is the next number in the sequence? 1 11 21 1211 111221 312211
Christina has four daughters, and each of her daughters has a brother. How many children does Christina have?
Rectify the following equality 101 - 102 = 1 by moving just one digit.
Replace the (?) with the correct mathematical signs to make the expression equal to 59. 18 ? 12 ? 4 ? 5 = 59
Can you solve below mathematical equation? 2^1234 - 2^1233
There is one four-digit whole number n, such that the last four digits of n2 are the original number n
What will be the best approach to finding all the prime numbers less than 75 that leave an odd reminder when we divide them with 5?
John replied, when asked how old he was. In 2 years he will be twice as old as he was five years ago.' How old is he ?
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
