If eleven plus two equals one, what does nine plus five equal?

What is the four-digit number in which the first digit is one-third the second, the third is the sum of the first two, and the last is three times the second?

Which wheel of car does not rotate when you turn your car right?

Below the four parts have been reorganised. The four partitions are exactly the same in both arrangements. Why is there a hole?

Why is it very easy to weigh a fish?

In the given figure, move three matchsticks so that the resulting figure contains two rectangles.

There was a minor accident with a doctor's son but the doctor noticed no major injury. After the treatment, the father of that doctors son is sitting with the son of the doctor without the doctor being in the room.

How can this be possible?

When monkey rotate the gear, which mark will be hit 1 or 2 ?

If,

Akriti = 631
Levis = 521
Sroti = 521
Aneel = 533
Then,
Sunil =?

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?