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What is the contrapositive of the statement "If a mineral's structure is cubic, then it's not gold"?

 Mar 1, 2019
 #1
avatar+215 
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If it's gold, then the mineral's structure is not cubic

 

Never worked with contrapositives before, but I think this is right

 Mar 1, 2019
 #2
avatar+99324 
+1

contrapositive

conversion of a proposition from all A is B      to all not-B is not-A.     (Google definition)

 

Statement

If a mineral's structure is cubic, then it is not gold

A=mineral's structure is (cubit)

B=it is (not gold)

If A then B

 

contrapositive

A=mineral's structure is (cubit)

B=it is (not gold)

all not-B is not-A

If it is not (not gold)   then   it's mineral structure is not  (cubic.)

If it is      gold            then   it's mineral structure is not cubic.

 Mar 2, 2019

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