What does the following represent?

N N N N N N N

A A A A A A A

C C C C C C C

Analyze and find the missing item in the sequence:
16, 06, 68, 88, __, 98

Luis Garavito killed Density x Volume.

Who is Luis Garavito ?

What does a man do only once in his lifetime, but women do once a year after they are 29?

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

How can this be possible?

There is a barrel with no lid and some wine in it. 'This barrel of wine is more than half full,' said Curly. 'No it's not,' says Mo. 'It's less than half full.' Without any measuring implements and without removing any wine from the barrel, how can they easily determine who is correct?

How can one talk without saying a single word?

Which letter of the alphabet has the most water?

If EELS + MARK + BEST + WARY = EASY

What does HELP + BARK + WARD + LEAD equal?

Identify the hidden meaning behind this picture?