Sizing silver for a ₹10 lakh account

MCX silver is at an illustrative ₹1,60,000/kg. A trader with ₹10,00,000 risks 1% a trade and puts the stop 3% below entry. (a) For SILVER (30 kg), SILVERM (5 kg) and SILVERMIC (1 kg), compute the notional and the risk per lot, and the number of lots the 1% rule allows. (b) For the SILVERMIC position of (a), compute the round-trip cost if the stop is hit, using (10.28) with brokerage ₹20 per order, MCX charge ₹2.10 per lakh each side, SEBI fee ₹10 per crore each side, stamp duty 0.002% on the buy, CTT 0.01% on the sale and GST 18% on brokerage, MCX charge and SEBI fee. Express it as a percentage of the planned risk. (c) Why is the per-order brokerage the largest cost item here, and when would SILVERM be cheaper per rupee of risk?