The factorisation of<br /> 1 + p + q + r + pq + qr + pr + pqr is

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Madhu

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Q. The factorisation of

1 + p + q + r + pq + qr + pr + pqr is

(A) (1 + p)(1 + q)(1 + r)
(B) (1 – p)(1 – q)(1 – r)
(C) (1 – p)(1 – q)(1 + r)
(D) (1 + p)(1 – q)(1 – r)

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✅ Correct Answer: (A) (1 + p)(1 + q)(1 + r)

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