Find out the missing number in the picture attached:

Can you complete the sequence puzzle?

AR TA GE CA LE VI LI _

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.

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

How many triangles can you find in this given picture?

What number do you get when you multiply all of the numbers on a telephone's number pad?

A beggar on the street can make one cigarette out of every 6 cigarette butts he finds. After one whole day of searching and checking public ashtrays the beggar finds a total of 72 cigarette butts. How many cigarettes can he make and smoke from the butts he found?

How can you make number one disappear by adding something to it?

I am a ten letters word
The first four letters have the power to rule,
Next, four-letter can be eaten.
The next three-letter represents a lady.
I can fly as well

what am I looking for?

If you paint a brown house white it will become a white house. If the stoplight changes from red to green, then the light is green. So, if you throw a white shirt into the Red Sea, what will it become?