I inserted a coin in a bottle and closed its mouth with the help of a cork. Now, I was able to take the coin out from the bottle without taking out the cork or breaking the bottle. Can you tell me how I did it?

Find out the missing number in the picture attached:

Take away my first letter, then take away my second letter. Then take away the rest of my letters, yet I remain the same. What am I?

How do you go from 98 to 720 using just one letter?

One day Jenifer meets the Lion and the Tiger in the Forest of Forgetfulness. She knows that the Lion lies on Mondays, Tuesdays, and Wednesdays, and tells the truth on the other days of the week. The Tiger, on the other hand, lies on Thursdays, Fridays, and Saturdays, but tells the truth on the other days of the week. Now they make the following statements to Jenifer:

Lion: Yesterday was one of my lying days.

Tiger: Yesterday was one of my lying days too.

What day is it?

Can you name an animal whose killing cannot be performed without spilling your own blood?

Can you count the number of triangles in the picture below?

My location can be determined by the below rebus.
So where am i ?

You need to climb ten stairs. At every stair, you can either take one step up or you can jump two steps up.

In how many different ways you can climb 10 stairs?

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