“∑n2 = n(n+1)(2n+1)/6” has been added to your cart. Continue shopping Product Price Quantity Subtotal Tower Of Brahma Puzzle ₹190.00 Tower Of Brahma Puzzle quantity ₹190.00 ∑n2 = n(n+1)(2n+1)/6 ₹420.00 ∑n2 = n(n+1)(2n+1)/6 quantity ₹420.00 Coupon: Cart Totals Subtotal ₹610.00 2.5% CGST ₹4.75 2.5% SGST ₹4.75 9% CGST ₹37.80 9% SGST ₹37.80 Total ₹695.00 Continue Shopping Checkout