The square root of number 121 is "11". What is the square root of the number "12345678987654321."?

He runs but never walks. Murmurs, but never talks. Has a bed, but never sleeps. And has a mouth, but never eats?

Can it be possible to build a house that has all its four walls facing towards the South?

Find three numbers such that When we multiply three numbers, we will get the prime numbers. The difference between the second and the first number is equal to the third and second.

How many bricks does it take to complete a building that is 15 feet wide, 30 feet deep, and 12 feet tall made of brick?

Move three sticks of the spiral below to form a square.

There were three women in all the swimming costumes!
One was happy and the other two were sad!
The happy one was crying and the sad ones were smiling.
Why was this?

The day before yesterday I was 25 and the next year I will be 28. This is true only one day in a year. What day is my birthday?

Which country gets ill every time?

Which English verb becomes past tense just by rearranging the letters?