A 3 digit number is such that it's unit digit is equal to the product of the other two digits which are prime. Also, the difference between it's reverse and itself is 396.

What is the sum of the three digits?

Christina has four daughters, and each of her daughters has a brother. How many children does Christina have?

Divide 110 into two parts so that one will be 150 per cent of the other. What are the 2 numbers?

How can you spell "White of an egg" in one word?
Hint: I know you can spell coke, poke, and joke.

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?

You need to arrange three 7 and mathematical symbols to form number 1?

I have cities, but no houses. I have mountains, but no trees. I have water, but no fish. What am I?

We have shown you a regular water barrel as below. Without using any measuring device can you check if the barrel is more than half-filled or less than half-filled?

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?

In front of you, there are 9 coins. They all look absolutely identical, but one of the coins is fake. However, you know that the fake coin is lighter than the rest, and in front of you is a balance scale. What is the least number of weightings you can use to find the counterfeit coin?