What goes up but never comes down?

What kind of tree can you carry in your hand?

What is the next number in this series?

4,12,84,3612....

You have to fill the below given grid in a manner that every row and column contains the digits 1 to 6. Also, make sure that the squares that are connected with each other must contains the same digit.

Take 9 from 6, 10 from 9, 50 from 40, and leave 6.

How Come ??

Two old friends, Jack and Jill, meet after a long time, and discussing as:

Jack: Hey, how are you, man?

Bill: Not bad, got married and I have three kids now.

Jack: That's awesome. How old are they?

Bill: The product of their ages is 72 and the sum of their ages is the same as your birth date.

Jack: Cool..But I still don't know.

Bill: My eldest kid just started taking piano lessons.

Jack: Oh, now I get it.

How old are Bill's kids?

Can you find out which options fits best with the missing column?

There was a blind beggar living on the footpath of a street. Suddenly one day, the beggar's brother died. What was the relation of the blind beggar with the person who died?

PS: Brother is not the answer.

Can you complete the sequence puzzle?

AR TA GE CA LE VI LI _

I know a ten-letter word in the English language which can be typed using only the top rows of the computer keyboard.