What goes up but never comes down?

Can you complete the sequence puzzle?

AR TA GE CA LE VI LI _

Look at the below sequence of letters and tell us what the next letter should be:

O T T F F S S ?

During an interview, the interviewer ordered hot coffee for the candidate to relieve the stress. The coffee was kept before him. After a minute, the interviewer asked him, 'What is before you?' He replied 'Tea'.

The candidate was selected immediately. Why?

Can you find the least possible number such that

If the number is divided by 3, it gives the remainder of 1;
If the number is divided by 4, it gives the remainder of 2;
If the number is divided by 5, it gives the remainder of 3;
If the number is divided by 6, it gives the remainder of 4.

In the below-given picture of a pretty girl, there is something wrong. Can you find out what it is?

If you drop me I’m sure to crack, but give me a smile and I’ll always smile back. What am I?

There is a brick of gold and a brick of iron in a boat (both 10-inch blocks), if they are both dropped into the water which will make the water level higher?

Okay before we begin with the puzzle, do keep in mind that you have to answer it quickly.

You are participating in a car race. Seeking the perfect moment, you overtake the second person in the race. What positions are you in now?

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