What number should come in place of the question mark below?

Peter wakes up daily to pick up his cycle and crosses the border between Spain and France daily with a bag on his shoulder. He is investigated daily by the officials but they don't find anything suspicious.

If we tell you that he is smuggling something what would it be?

A pond had 60 fish, out of which, all but 20 died.
How many fishes are now present in that pond?

As easy as you can get into me, it is as hard to get out of me.

Do you know what I am?

Three doctors said that Bill was their brother. Bill says he has no brothers. How many brothers does Bill actually have?

A finger goes in me. You fiddle with me when you're bored. The best man always has me first. What am I?

When you stop to look, you can always see me. But if you try to touch me, you can never feel me. Although you walk towards me, I remain the same distance from you. What am I?

There are four 3-link chains. All you have to do is join them into a big 12-link chain. For joining two closed links, one of the links must be cut and placed onto the other link for closing.

How many minimum links will you have to cut to make the big chain?

'S' refers to the number of seconds in a day and 'H' refers to the number of hours in ten years. Which quantity out of these two is greater?

If in a code language, DISTANCE is written as IDTUBECN and DOCUMENT is written as ODDVNTNE, the how will THURSDAY be coded as in the same language?