What occurs twice in a week, once in a year but never in a day?

Make eight squares by moving only two matchsticks.
Note- Square can be of different sizes.

Can you find a number that lies one third of the distance between 1/3 and 2/3?

If Rajina's daughter is my daughter's mom, who am I to Rajina?

Using four sevens (7) and a one (1) create the number 100. Except for the five numerals, you can use the usual mathematical operations (+, -, x, :), root and brackets ()

When I asked a girl's name she told me her name is the date '07/09/2001'.

I thought for a few seconds and then I got her name. Do you?

I’m orange, I wear a green hat and I sound like a parrot. What am I?

No one wants to have it, but if one got it, he does not want to lose it. What is It?

On a special event at the prison, 5 prisoners John, Jacob, Krist, Tang, and Dang given a chance to go to a sauna and can bring one thing with them.

Following are the things that the prisoners bring with them.
John: A soda
Jacob: Thermos
Krist: Book named "How to kill"
Tang: A Walkman
Dang: Harmonica

Since it is a Sauna, no one can see each other. After a while When the steam is switched, Tang was found dead and there was blood all around.
J Bond was called and he instantly come to know who can be the murderer. How?

Andrew sees a very rare bird named "Ruppell's vulture". Soon Andrew was dead. Can you explain the mystery, Mr. Sherlock?