A little girl goes to the store and buys one dozen eggs. As she is going home, all but three break. How many eggs are left unbroken?

I am a prime number.
The double of myself is equal to the square of me.

which number am I?

Solve below popular number sequence
314 159 265 358 979 323 846 ?

Christina, Allison and Lena are 3 daughters of John a well-known Mathematician, When I asked John the age of their daughters. He replied "The current age of her daughters is prime. Also, the difference between their ages is also prime."

How old are the daughters?

Can you make numbers like 24, using numbers 3,3,7 & 7 with any arithmetic operator?

Place a mathematical symbol between the numerals 5 and 9 in such a way that the resulting number is greater than 5 but smaller than 9.

Baseball bat and ball cost $100. If the bat cost $99 more than the ball, what is the cost of each?

In a town, there are four houses located at different distances from each other. Following are the distances:

The third house is 60 meters apart from the first house.
The fourth house is 40 meters apart from the second house.
The third house is 10 meters nearer to the fourth house than it is to the second house.

Can you find out the distance between the fourth and the first house?

A tree doubled in height each year until it reached its maximum height over the course of ten years. How many years did it take for the tree to reach half its maximum height?

Which three-digit number, made of consecutive digits, like 567, is 2 less than a cube and 2 more than a square?