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i join the lrdi course but the videos are different as you show them earlier.

can ntpc test in computer?

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give me Short cut method of mathematics

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Supposethe acceleration due to gravity at a place is10m/s^2. Find its value in cm/min^2.

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There are 12 towns grouped into four zones with three towns per zone. It is intended to connect the towns with telephone lines such that every two towns are connected with three direct lines if they belong to the same zone, and with only one direct line otherwise. How many direct telephone lines are required?