Which of the folowing formulae represents that the given frame is a perfect frame? (Where n = number of members in the frame and j= number of joints )An=(2j-3)Bn=(j-3)Cn=(3j-2)Dn=(2-j)Answer: A. n=(2j-3) Read Explanation: Which of the folowing formulae represents that the given frame is a perfect frame n=(2j-3)Read more in App