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Question

Add: p(pq), q(qr) and r(rp).

A
p3+q2r2pqqpr
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B
p2q2+r3pqqrpr
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C
p23+q2+r3pqqrpr
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D
p2+q2+r2pqqrpr
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Solution

The correct option is D p2+q2+r2pqqrpr
p(pq),q(qr),r(rp)

(p2pq),(q2qr),(r2pr)
Adding we get,
=(p2pq)+(q2qr)+(r2pr)

=p2+q2+r2pqqrpr

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