What is the nature of
?

What is the cardinal of the image of
?

Give an element having several inverse images.

Give an element having several images.

Give an element without inverse image.

Give an element without image.

What is the image of
?

What is the inverse image of the subset {}?

**Help**. Enter `-1` if the asked elements do not exist.

What is the nature of
?

What is the cardinal of the image of
?

Give an element having several inverse images.

Give an element having several images.

Give an element without inverse image.

Give an element without image.

What is the image of
?

What is the inverse image of the subset {}?

**Help**. Enter `-1` if the asked elements do not exist.

What is the nature of
?

What is the cardinal of the image of
?

Give an element having several inverse images.

Give an element having several images.

Give an element without inverse image.

Give an element without image.

What is the image of
?

What is the inverse image of the subset {}?

**Help**. Enter `-1` if the asked elements do not exist.

What is the cardinal of the image of
?

Give an element having several inverse images.

Give an element having several images.

Give an element without inverse image.

Give an element without image.

What is the image of
?

What is the inverse image of the subset {}?

**Help**. Enter `-1` if the asked elements do not exist.

What is the cardinal of the image of
?

Give an element having several inverse images.

Give an element having several images.

Give an element without inverse image.

Give an element without image.

What is the image of
?

What is the inverse image of the subset {}?

**Help**. Enter `-1` if the asked elements do not exist.

What is the cardinal of the image of
?

Give an element having several inverse images.

Give an element having several images.

Give an element without inverse image.

Give an element without image.

What is the image of
?

What is the inverse image of the subset {}?

**Help**. Enter `-1` if the asked elements do not exist.

What is the cardinal of the image of
?

Give an element having several inverse images.

Give an element having several images.

Give an element without inverse image.

Give an element without image.

What is the image of
?

What is the inverse image of the subset {}?

**Help**. Enter `-1` if the asked elements do not exist.

What is the cardinal of the image of
?

Give an element having several inverse images.

Give an element having several images.

Give an element without inverse image.

Give an element without image.

What is the image of
?

What is the inverse image of the subset {}?

**Help**. Enter `-1` if the asked elements do not exist.

Please take note that WIMS pages are interactively generated; they are not ordinary HTML files. They must be used interactively ONLINE. It is useless for you to gather them through a robot program.

Description: collection of exercises on maps between finite sets. This is the main site of WIMS (WWW Interactive Multipurpose Server): interactive exercises, online calculators and plotters, mathematical recreation and games

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