Which word does the below Plexor means ?

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

What do you see in the image below

You have a three-gallon and a five-gallon measuring device. You wish to measure out four gallons.

If you’ve got me, you want to share me; if you share me, you haven’t kept me. What am I?

Find three numbers such that

* When we multiply three numbers, we will get the prime numbers.
* The difference between the second and the first number is equal to the third and second.

What does a man do only once in his lifetime, but women do once a year after they are 29?

You are in a room that has three switches and a closed door. The switches control three light bulbs on the other side of the door. Once you open the door, you may never touch the switches again. How can you definitively tell which switch is connected to each of the light bulbs?

The more of this there is, the less you see. What is it?

Place the numbers from 1 to 9 in the circles in a manner that each side of the triangle sums up to 17.