Product Price Quantity Subtotal ∑n2 = n(n+1)(2n+1)/6 ₹420.00 ∑n2 = n(n+1)(2n+1)/6 quantity ₹420.00 Make (a+b)2 - (a-b)2 Model (50 Nos.) (minus) ₹550.00 Make (a+b)2 - (a-b)2 Model (50 Nos.) (minus) quantity ₹550.00 Coupon: Cart Totals Subtotal ₹970.00 9% CGST ₹37.80 9% SGST ₹37.80 Total ₹1,046.00 Continue Shopping Checkout