What is the word or phrase?

A boy and a girl are sitting on the porch.
"I'm a boy," says the child with black hair.
"I'm a girl," says the child with red hair.
If at least one of them is lying, who is which?

How many words can a quill made with the feather of a pigeon write with a 100ml bottle of black ink?

When we see 2 but call 10?

Identify the next two numbers in this series.

101, 112, 131, 415, 161, 718, ???, ???

What are the next two letters in the following series and why?
W A T N T L I T F S _ _

*Hint: Check Puzzle Title

My sock drawer has 26 blue socks, 13 pink socks, 33 green socks, and 12 red socks, how many socks would I have to pull out in the dark to be sure I had a matching pair?

Detective Rockford was jogging near the beach at 4:30 am.
He hears a sound near the shack "No Michael, Please Do not shoot me".
Next instance he heard the sound of gunfire. Rockford rushes to the shack where he finds women lying dead and a gun in close proximity of three "Doctore Lawyer and a Teacher".

Rockford immediately knew that the Lawyer has committed the crime. How?

If your uncle’s sister is not your aunt, what relation is she to you?

In particular commonwealth games, a female participant won silver and gold medals for a single event.

How can this be possible?