It has a long neck, A name of a bird, Feeds on cargo of ships, It's not alive,

What is it?

There’s a girl who has a large family. She has an equal amount of brothers and sisters, but each brother only has half as many brothers and sisters. What’s the correct amount of brothers and sisters?

There is a number which when you multiply by 3 and subtract 2 from the result, then the resulting number is the reverse of the actual number.

What is the smallest number that stands true on the statement?

If,

20 % 5 = 24

21 % 7 = 33

42 % 6 = 67

Then;

66 % 6 = ?

A man is found dead in his bathroom naked with blood scattered all around him. The bathroom was locked from the inside and there is no trace of any struggle. There is nothing in the bathroom except his pant with the belt still around and his shirt. Also, the medic team can't find any incision in his body that may have been the reason behind so much blood loss.

The Police department is clueless regarding this murder mystery.
Can you?

Can you convert the number zero(0) into a positive number using just one mathematical operator ?

By including only four matchsticks in below picture, you have to make "Four Triangles And Two Squares"

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

I know a nine-letter word having only one vowel.
Do you ?

What seven-letter word has hundreds of letters in it?