Bring a huge sum of money from Nepal to USA

I can exchange 50k USD for 100NPR/USD.

You said legally, I don't think it is allowed to take out such a huge sum from Nepal without the proper permission and stuff. But say you did it anyway, US custom probably won't give you a hard time for the money coming in..but depositing such a large amount here could set a red flag as anything above $10K (if I recall correctly) coming in from overseas could be a trigger for further audit. Do some google search on this.

Pepsi, I will give you $1 for RS 110.00

Hundi's the way to go.

Find some people who want to send money in nepal, 1 carod is not that big money i guess.

Cheapest way to legally send money to Nepal from abroad is by using transferwise up to maximum $5k. It is a remmitance agency same as western union and moneygram etc with far cheaper fees than western union money grams compare and check yourself at their websites. You receive high exchange rate with very low service fee using transferwise. Click my referral link at https://transferwise.com/a/ste... get your first transfer for free.