Can you solve this amazing hard number series problem?
7, 8, 10, 12, 16, 18 ?

A patient was diagnosed with some ailment. He was given five different tablets to take at night at an interval of 15 minutes.

How long will it take the patient to consume all the five tablets?

In Greek mythology, the Sphinx sat outside of Thebes and asked this riddle of all travellers who passed by. If the traveller failed to solve the riddle, then the Sphinx killed him/her. And if the traveller answered the riddle correctly, then the Sphinx would destroy herself. The riddle:

What goes on four legs in the morning, on two legs at noon, and on three legs in the evening?

Oedipus solved the riddle, and the Sphinx destroyed herself.

A Child was born in Lahore, Pakistan. Still, the child is not a Pakistani citizen. why?

My friends called me Iron59 because my parents are a chemist and a mathematician. What is my real name?

If you say my name, I will no longer exist. What am I?

What is next number in the pattern below:

131 517 192 123 ?

I taste better than I can smell. Who am I?

Luis Garavito killed Density x Volume.

Who is Luis Garavito ?

There is a box full of marbles,
all but two are blue,
all but two are green,
and all but two are red.

How many marbles are in the box?