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    If P is a prime number and P divides Q2\text{Q}^2Q2​, then P will NOT necessarily divide:
    Question

    If P is a prime number and P divides Q2\text{Q}^2​, then P will NOT necessarily divide:

    A.

    3Q

    B.

    Q + 1

    C.

    2Q22\text{Q}^2​​

    D.

    Q

    Correct option is B

    Solution:
    Option A: 3Q ​
    Since P divides Q , it must also divide 3Q (as 3Q is a multiple of Q).

    P divides 3Q .
    Option B: Q + 1 
    P divides Q, but there is no guarantee that P divides Q + 1.
    Example: Let P = 3, Q = 6.
    3 divides 62=366^2 = 36​, and 3 divides 6 .
    But 3 does not divide 6 + 1 = 7 .
    P does not necessarily divide Q + 1 
    Option C: 2Q22Q^2​​
    Since P divides Q2Q^2​ , it must also divide 2Q22Q^2 ​(as 2Q2Q^2​ is a multiple of Q2).Q^2).
    P divides 2Q22Q^2​​
    Option D: Q 
    We already established that P divides Q.
     P divides Q 
    Thus, P does not necessarily divide Q + 1.
    Answer (B) Q + 1.

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