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

You need to arrange three 7 and mathematical symbols to form number 1?

There is a square piece of paper with a hole that is denoted by the circle on the top right side in the given picture. You have to cut the paper in a manner that it forms two and only two separate pieces of paper and then rearrange the pieces in a manner that the holes come in the centre of the paper.

If Rajina's daughter is my daughter's mom, who am I to Rajina?

Solve the following series:
AZ, GT, MN, __, YB

Look at the picture and find out which square is not linked with any of the other squares.

In a town, there are four houses located at different distances from each other. Following are the distances:

The third house is 60 meters apart from the first house.
The fourth house is 40 meters apart from the second house.
The third house is 10 meters nearer to the fourth house than it is to the second house.

Can you find out the distance between the fourth and the first house?

Decode below three cipher riddles:

26 L of the A
7 D of the W
1000 Y in a M

Eight of us go fourth, not back, to protect our king from an attack. What are we?

There are three boxes. One is labeled "APPLES" another is labeled "ORANGES". The last one is labeled "APPLES AND ORANGES". You know that each is labeled incorrectly. You may ask me to pick one fruit from one box which you choose.

How can you label the boxes correctly?