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Question Number 202016 by sonukgindia last updated on 18/Dec/23

Answered by MM42 last updated on 18/Dec/23

x^(55) −1=253×8k⇒“x” is odd (x−1)(x^(54) +x^(53) +...+1)=253×8k x−1=8k′⇒x≡^8 1

x55−1=253×8k⇒‘‘x″isodd(x−1)(x54+x53+...+1)=253×8kx−1=8k′⇒x≡81

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