1-Crypto currency is a form of virtual currency that can be used digitally

2-Bitcoin , Doge coins, Ripple etc.

3-The record s of crypto currency are stored securely in blockchain.

4-The first decenterlized crypto currency "Bitcoin was developed in 2009.

5-At present, there are more than 1000 crypto currency in the world till November 2021.

6-cryptc currency is a cost-effective technology.

7-lt also provides fast and highly secure.

8-crypto currency is a decenterlized technology there for people may- have trust issues.

9-however 'it is not considered as a legal tender across the world.