“∑n2 = n(n+1)(2n+1)/6” has been added to your cart. Continue shopping Product Price Quantity Subtotal Pentominoes Puzzle ₹190.00 Pentominoes Puzzle quantity ₹190.00 Make a Communication Satellite Model (50 Sets) ₹750.00 Make a Communication Satellite Model (50 Sets) quantity ₹750.00 ∑n2 = n(n+1)(2n+1)/6 ₹440.00 ∑n2 = n(n+1)(2n+1)/6 quantity ₹440.00 Coupon: Cart Totals Subtotal ₹1,380.00 2.5% CGST ₹23.50 2.5% SGST ₹23.50 9% CGST ₹39.60 9% SGST ₹39.60 Total ₹1,506.00 Continue Shopping Checkout