Gold or silver?

[@ShanmugamShanmugam-k6w]

Excellent explanation 🎉🎉🎉

[@jesusumi2198]

Nice sir....💥💥💥

[@velusamyveerappan1359]

Nice professor, simple explanation

[@rajukaruppasamy5781]

Excellent explanation sir

[@rajukaruppasamy5781]

You're a good teacher

[@tigermanphysics8633]

Thanks for liking

[@aswiniamerica4777]

Nice sir,good explanation

[@tigermanphysics8633]

Thanks for your appreciation.

[@chitrakalai8230]

Excellent

[@dr.m.rajarajan8087]

Very nice sir ❤

[@tigermanphysics8633]

Keep watching

[@dhivyasekar228]

Super sir🎉

[@gurushankar5898]

I remember my school days, thanks profesessor

[@kalaivadhana8049]

Super

[@renukasS]

Super sir

[@tigermanphysics8633]

Thanks for your appreciation.