For how many positive integers 'n',Â n3Â -Â 8n2Â +Â 20nÂ - – McqOptions

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1.	For how many positive integers 'n',Â n3Â -Â 8n2Â +Â 20nÂ -Â 13 is a prime?_x005F_x000D_
A.	3
B.	2
C.	5
D.	7
Answer» B. 2

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