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If a prime p divides the square of a number a, the theorem states that p also divides:
Aa less 1
Ba times 2
Ca itself
Da plus 1
Answer & Solution
Correct answer: C. a itself
1. The result concerns primes only.
2. It is used to prove irrationality.
3. The prime divides a itself.
_Source: NCERT Class 10 Mathematics, Chapter 1, Real Numbers._
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