Cristina was born in 1888. She just had her 30th birthday today how did that happen?

Your job is to measure 45 minutes if you have only two cords and matches to light the cords.

1. The two cords are twisted from various materials, so their different segments can burn at different rates.
2. Each cord burns from end to end in exactly one hour.

Describe your way of measuring the 45 minutes.

What 4-letter word can be written forward, backward or upside down, and can still be read from left to right?

If I remove one from eleven it becomes Ten and if I remove one from nine also becomes Ten. How?

I am sure no one can have two things for dinner. what are they?

What demands an answer, but asks no questions

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?

This is a simple one. You just have to count the number of Fs in the given sentence.

Finished Files are the result of years of scientific study combined with the experience of years.

How many did you count?

When I got four, I have it none.
When I got two, I have it some.
When I got none, I have it all.

What is it?

Decode below rebus
D
N
A
T
S , D