Find the next number in the series.
1 10 24 43 67 ?

See the given image carefully. What you have to do is move the blue checkers in the position of the black checkers and vice versa. You are only allowed to move the checker to an adjacent empty space. Do it in the least possible moves.

What is a word made up of 4 letters, yet is also made up of 3. Sometimes is written with 9 letters, and then with 4. Rarely consists of 6, and never is written with 5.

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

John replied, when asked how old he was. In 2 years he will be twice as old as he was five years ago.' How old is he ?

You have to put a letter on the following to make it a meaningful word. The only challenge is that you can't use 'E'.

S E Q U E N C _

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

I have some blue and red sock in my drawer. I have a total of 4 socks. I pick 2 socks and the chance that I get a pair of red socks is 1/2.

What is the chance of picking a pair of blue socks?

What comes
Once in a Year
Twice in a Month
4 times in a Week
6 times in a Day

The following alphametic has only one solution. Can you find it?
ENLIST + SILENT + LISTEN = ANAGRAM

PS: You may start the number from 0.