John named his first son Alpha, second Beta, third Charlie and fourth Delta. What is the fifth son's name?

I am the one who remains awake when you sleep. But I need to rest when you awake. Who 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?

You along with your friend are standing in front of two houses. Each of those houses inhabits a family with two children.

Your friend tells you the below two facts:
1) On your left is a family that has a boy who likes accounts but the other child loves science.
2) On the right is a family with a seven-year-old boy and a newborn baby.

You ask him, "Does either of the family have a girl?"

To this, he replies, "I am not quite sure. But can you guess that? If you are right, I will give you $500."

Which family do you think is likely to have a girl?

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

You are given four results as below:
1111 = F
2222 = E
3333 = T
Then, can you find out how to code 4444?

How will you measure 15 minutes using two hourglasses of 7 minutes and 11 minutes respectively?

A sundial has the fewest moving parts of any timepiece. Which has the most?

Can you solve the photo plexer logic ?

That attorney is my brother, testified the accountant.

But the attorney testified he didn't have a brother.

Who is lying?