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If x^n – 1 is divisible by x - λ, then the least positive integral value of λ is 

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If xn – 1 is divisible by x - λ, then the least positive integral value of λ is 

A. 1 

B. 2 

C. 3 

D. 4

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Given xn-1 is divisible by x-λ 

⇒ x=λ is the root of the eqn xn-1 

⇒λn-1=0 

⇒λn = 1 

Least value of λ=1

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