What is at the end of a rainbow?

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

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?

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.

They came out at night, without being called.
They lost at day, without being stolen.
Who are they?

What has to be broken before you can use it?

Four people need to cross a rickety bridge at night. Unfortunately, they have only one torch and the bridge is too dangerous to cross without one. The bridge is only strong enough to support two people at a time. Not all people take the same time to cross the bridge. Times for each person: 1 min, 2 mins, 7 mins and 10 mins. What is the shortest time needed for all four of them to cross the bridge?

Your mother’s brother’s only brother-in-law is asleep on your couch. Who is asleep on your couch?

By what process could you make a 'Tea-Table' into food?

Can you think of any three-dimensional shape that comprises of exactly two surfaces?