How many words can a pen with half refill write?

Can you replace the question mark with the correct number?

What demands an answer, but asks no questions

Three playing cards in a row. Can you name them with these clues? There is a two to the right of a king. A diamond will be found to the left of a spade. An ace is to the left of a heart. A heart is to the left of a spade. Now, identify all three cards.

Can you identify the hidden rebus in the image below?

Pronounced as one letter,
And written with three,
Two letters there are,
And two only in me.
I am double, I am single,
I am black blue and grey,
I am read from both ends,
And the same either way.

By removing one matchstick and adding one matchstick, can you convert the word "ZOO" to an animal name?

how come the second man dies?

Replace the question mark with the correct number below.

There was a blind man. He had four socks in his drawer either black or white. He opened it and took out two socks. Now the probability that it was a pair of white socks is 1/2.

Can you find out the probability that he had taken out a pair of black socks ?