This puzzle is for Harry Potter fans. Do you know why Tom Riddle is called Lord Voldemort?

Alex opened 24 presents
Jonah opened 8 presents
Clara opened 1 present

Can you find out how many presents were opened by Candy?

What's a single-digit number with no value?

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 have 1023 apples and 10 bags. You have to distribute these apples in these 10 bags in any way you choose. But when I ask for a certain number of apples you have to give them in terms of bags without transferring the apples from other bags. How do you distribute the apples?

A man who was outside in the rain without an umbrella or hat didn’t get a single hair on his head wet. Why?

Find the next number in the series?
2, 12, 36, 80, 150, 252, 392, _ ?

What number comes next in this sequence:
7 8 5 5 3 4 4 _

What begins with T, ends with T, and has T in it?

Below, you will find the mathematical proof that 10 equals 9.99999?. But is that possible or there is something wrong about it? Can you find the error?

x = 9.999999...
10x = 99.999999...
10x - x = 90
9x = 90
x = 10