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?

Whats the next number in the below number sequence pattern.

Speaking of rivers, a man calls his dog from the opposite side of the river. The dog crosses the river without getting wet, and without using a bridge or boat. How?

Take away the whole and some still remain. What is it?

What can you hold in your right hand, but never in your left hand?

Can you start the fire using two pieces of wood?

In the following series, a set of numbers is progressing with a particular pattern. Can you deduce that pattern and find the missing set?

(2 + 6), (21 + 6), (58 + 6), (119 + 6), ___

A mules travels the same distance daily.
I noticed that two of his legs travels 10km and the remaining two travels 12km.
Obviously two mules legs cannot be a 2km ahead of the other 2.

The mules is perfectly normal. So how come this be true ?

By removing one matchstick and adding one matchstick, can you convert the word "ZOO" to an animal name?

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