There are forty elephants and they have forty-fore heads. How can this be possible?

If I remove one from eleven it becomes Ten and if I remove one from nine also becomes Ten. How?

I start and end with 500 and carry a 5 in my heart. But I require the first letter and the first number to be complete. I am the name of a King.

Who am I ?

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

Can you decipher these quotes by Albert Einstein?
Blf xzm mvevi hloev z kilyovn lm gsv ovevo lm dsrxs rg dzh xivzgvw.

Count the number of triangles in the given picture.

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

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

I’m tall when I’m young, and I’m short when I’m old. What am I?

You have two bottles of pills marked with labels A and B. The pills are identical. The doctor has asked you to take one A pill and one B pill daily. You cant take more or less than that.

While taking out the pills one day, you took out one pill from A and by mistake took out two from B. You have no idea which pill is which now.

You cant throw away the expensive pills. What will you do now?