visit https://physicswallah.live.com,https://citizensofscience.com/ for physics,mathematics info.

visit citizensofscience website for physics,mathematics and economics competitions.

join in telegram for physics after engineering group with https://telegram.me/joinchat/hUgJ3mWIjmUzM2Rl.

join in whatsapp group for mathematics after engineering with https://chat.whatsapp.com/KpkfqIH7OaDJNCytb2HnGs.

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please be careful with current covid condition.