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     EduGorilla 
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    If ma2 + nb2 : mc2 + nd2 : : ma2 – nb2 : mc2 – nd2, then what is the relation between a, b, c and d?

    Options :-

    1. a + d = b + c
    2. ab = cd
    3. a2 + b2 = c2 + d2
    4. ad = bc
    5. a + c = b
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Reply To: If ma2 + nb2 : mc2 + nd2 : : ma2 – nb2 : mc2 – nd2, then what is the relation between a, b, c and d?….
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