I am the largest in my family of fifty.
The youngest of our family lives separately from the rest of the family and so do I.
I am regarded as harsh and tough.
I am so large, you cut me in two equal halves,
each half would still be larger than the second largest member of the family.
Who am I?

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

How can this be possible?

I add 5 to 9 and get 2. The answer is correct, so what am I?

Why do we preferably have round manhole covers and not square ones?

Replace the question mark with the number below given a simple math problem.

Take away my first letter, then take away my second letter. Then take away the rest of my letters, yet I remain the same. What am I?

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

Can you make four (4) nines (9) equal 100?

John was so frustrated to be the suspect of being a sleeper terrorist that he shoot himself right between the eyes with a revolver in his toilet. The revolver and the bullets were accurate. Minutes later John walks out of the toilet unharmed.
How can this be possible?

What month of the year has 28 days?