Arithmetic progression and geometric progression Tricks (Ap and Gp math tricks) ✍ RRB NTPC and SSC

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जितना आपलोग सोचते है उतना कठिन है नहीं गणित ✍ Ap and Gp math tricks✍ 1st part Ap and GP :https://bit.ly/2Pbepd...

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