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Answering first question, as we are allowed to answer 1 question per post. Please post the other questions separately. Also, we are not allowes to answer exaamintion questions.
7.
PR = PQ, as marked in the triangle PRQ.
The angles opposite to this are also equal.
Hence, Angle PRQ = n = PQR = 59
PRQ = n = 58
Answer: 58
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