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Question
Find the least positive value of x such that 71 ≡ x (mod 8)
Solution
To find the least value of x such that
71 ≡ x (mod 8)
71 ≡ 7 (mod 8)
∴ x = 7. ...[∵ 71 – 7 = 64 which is divisible by 8]
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