If two's company, and three's a crowd, then whats four and five ?

A Scientist was fifty years old in the year 2000 but he was forty years old in the year 2010. How can this be possible?

PS: It has a logical answer.

My location can be determined by the below rebus.
So where am i ?

I am lying and I always lie. Tell me whether I am lying or telling the truth.

A word I know has six letters it contains, remove one letter and 12 remain. What is it?

I can turn polar bears white.
I can make anyone dance.
I can make everyone cry
I can make your hands clap
I can make you thin.
I can make you smile.
I can make you smile

Can you guess the riddle?

Complete the following series. It.s very logical:

1, 4, 5, 6, 7, 9, 11, __?

As a whole I am both
safe and secure.

Behead me and I become
a place of meeting.

Behead me again and I am
the partner of ready.

Restore me, and I become
the domain of beasts.

What am I?

People put me on the table and cut me but do not eat me. What am I?

When I go in I might cause pain. I cause you to spit and ask you not to swallow. I can fill your hole. What am I?