Explanation:

• Statement 1 is correct: A bill of exchange is an unconditional order in writing addressed by one person to another signed by the person giving it.
•  Bills of exchange are similar to checks and promissory notes. They can be drawn by individuals or banks and are generally transferable by endorsements.The difference between a promissory note and a bill of exchange is that this product is transferable and can bind one party to pay a third party that was not involved in its creation. If these bills are issued by a bank, they can be referred to as bank drafts. If they are issued by individuals, they can be referred to as trade drafts.
• Statement 2 is correct: Bitcoins are electronic currency, otherwise known as ‘cryptocurrency’. Bit coins are a form of digital public money that is created by painstaking mathematical computations and policed by millions of computer users called ‘miners’. Bitcoins are, electricity converted into long strings of code that have money value. (Hence option 2 is correct)
• Statement 3 is incorrect: Nidhi is acompany formed with the exclusive object of cultivating the habit of thrift, savings and functioning for the mutual benefit of members by receiving deposits only from individuals enrolled as members and by lending only to individuals, also enrolled as members, and which functions as per Notification and Guidelines prescribed by the DCA.