- Thread starter
- #1

- Thread starter Violet
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- Thread starter
- #1

- Jan 30, 2012

- 2,502

What kind of help do you need? Surely you understand that if you take all women from a group of adults, you'll get all men and only men.

Please take some time to read the forum rules, especially rule #11. Also, what you are proving is not an equation; it's a statement (claim, proposition, theorem) in the form of an implication. Finally, "proof" is a noun, and the corresponding verb is "prove".

- Mar 22, 2013

- 573

Okay, try drawing the Venn diagram. What do you observe? Do you see how obvious it is? Can you now sketch out a formal proof?

Balarka

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- Thread starter
- #4

Thanks Balarka! When I draw Venn diagram, everything is clear! But I can't sketch out a formal proof!

Okay, try drawing the Venn diagram. What do you observe? Do you see how obvious it is? Can you now sketch out a formal proof?

Balarka

.

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- Mar 22, 2013

- 573

Perhaps you could at least show us what approach you took?