vijay academy pbh

आवर्त सारणी के सभी ब्लॉक के तत्वों को याद करने की ट्रिक||periodic table learn by truck||#chemistry

BPSC TRE 4.0||maths 6th to 8th &9th to 10th||भाज्य तथा अभाज्य|number system|| part - 2nd|Bihar STET

BPSC TRE 4.0 &5.0|| Math 6th to 8th &9th to 10th||Number system part -1||Bihar STET paper -1||