G.P. Lecture 4. 

this is in continuation of video no 3 on G.P. for 1st semester diploma in engineering students in A.M.U. Aligarh, University polytechnic in special and to all colleges of diploma engineering as well. The students in other boards, these lectures are equally important. My other related videos links are as given below kindly subscribe, share and like my channel.
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6. PART - 3 G.P. • GP LECTURE 3