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

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

In the four images below, can you find the odd one out?

In the picture, you can see a chess board. On the top left position, the K marks a knight. Now, can you move the knight in a manner that after 63 moves, the knight has been placed at all the squares exactly once excluding the starting square?

What runs around the whole yard without moving?

I purchased an awesome ice cream cone having 5 different flavour scoops.
Five flavours are pistachio, mint-chip, strawberry, marshmallow, and raspberry

I will give u some clues so that you can figure out the order of flavours from bottom to top.
1. The bottom flavour of the cone has 10 letters.
2. The marshmallow scoop is between the pistachio and the mint-chip scoop.
3. marshmallow is the raspberry scoop but below the mint-chip scoop.

So can you figure out the flavour of ice cream in order from bottom to top?

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

In the given figure, move three matchsticks so that the resulting figure contains two rectangles.

Krish is 45 years old and his mother Crishtina is 73 years old.

Can you find out how many years ago, his mother was three times his age?

I am written with two letters.
I said with the one.
I usually am seen with the two.

Who am I?