What is the riddle which can be asked all day with a different correct answer each time.

In a football game, Christina defeated Teresa by 2 - 0 but no man from either side scored. How can this be possible?

If it took eight men ten hours to build a wall, how long would it take four men to build it?

What does this Rebus Picture means ?

If 21x = 79x, what is the value of x?

I am weightless, but you can see me. Put me in a bucket, and I'll make it lighter. What am I?

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?

What is 3/7 chicken, 2/3 cat and 2/4 goat?

Living above a star, I do not burn
Eleven friends and they do not turn
I can just be visited in a sequence, not once or repeatedly
PQRS are my initials
Can you tell my name accurately?

Katniss and Peeta are liars. They both lie on some specific days.

Katniss lies on Fridays, Saturdays and Sundays. She speaks the truth on all other days.

Peeta lies on Tuesdays, Wednesdays and Thursdays. He speaks the truth on all other days.

Can you tell that one day of the week when both of them will say "Tomorrow, I will lie."?