How many people must be gathered together in a room, before you can be certain that there is a greater than 50/50 chance that at least two of them have the same birthday?

Can you name an animal whose killing cannot be performed without spilling your own blood?

John enters a small room. The Door Closes.
When the door opens, John is in a larger room.

Explain?

What does below Rebus mean ?

esgg sgeg gegs gsge

I am the beginning of everything, the end of everywhere. I'm the beginning of eternity, the end of time and space. What am I?

Three friends decide to distribute the soda cans they had among them. When all of them had drunk four cans each, the total number of cans that remained was equal to the cans each one of them had after they had divided the cans.

Can you calculate the total number of cans before distribution?

John was running from 40 thieves. John has got 3 gold boxes which weigh as 4kg, 2kg, and 1kg respectively. A witty man asked John to stay with him for seven days in exchange for 1kg gold per day. John needs to stay there for seven days and also do not want to give the witty man any advance. How can John pay for his seven days stay?

What breaks yet never falls, and what falls yet never breaks?

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."?

There is a wide field of corn. A goose finds its way into the field and starts running. Can you find out till which point the goose can run into the field?