A detective visits his friend John just to discover that John's neighbour Dr Jacob was murdered. Dr Jacob, who is a mathematician wrote the murderer's name in a code word "Hcqtfz". There were five suspects
1. Ajit
2. Pankaj
3. Ganpat
4. Deenu
5. Hariya

The Detective was instantly able to find the murderer.
Can you?

Which is heavier: a ton of bricks or a ton of feathers?

Find the missing letter in the last circle logically in the given below picture.

What number does the below three word/phrase identify and why?
1. Deck
2. Year
3. Singing in the Rain

A 3 digit number is such that it's unit digit is equal to the product of the other two digits which are prime. Also, the difference between it's reverse and itself is 396.

What is the sum of the three digits?

A man died, leaving $10,000,000 for his widow, 5 sons and 4 daughters. Each daughter received an equal amount, each son received twice as much as a daughter, and the widow received three times as much as a son.

How much did the widow receive?

Why Aeroplane windows are round?

I have holes on the top and bottom. I have holes on my left and on my right. And I have holes in the middle, yet I still hold water. What am I?

Eight of us go fourth, not back, to protect our king from an attack. What are we?

I am lying and I always lie. Tell me whether I am lying or telling the truth.