I never stop running even when I standstill. If I am formed by joining two identical bodies together, can you guess who I am?

I speak without a mouth, and hear without ears. I have no-body, but I come alive with the wind. What am I?

Look at this sequence from top to bottom. What is the next number in the sequence?
1
11
21
1211
111221
312211

Can you spot the hidden girl in the picture below?

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?

Two in a corner, one in a room, zero in a house, but one in a shelter. What am I?

When it is alive we sing, when it is dead we clap our hands. What is it?

If all Goats are Sheep and all Sheep are Deers, are all Deers Goats ?

There is an ancient kingdom where every married woman keeps information regarding the fidelity of other men. However, what they don't know is the fidelity of their own husbands. Also, there is an ancient belief that they don't tell each other about the fidelity of their husbands.

On a certain day, the queen of the kingdom declares that she has identified at least one unfaithful man in the kingdom. She allows the wives to identify and gives them authority to kill their husbands if they are unfaithful at midnight.

How will the wives manage it?

What's a single-digit number with no value?