Since it is a 12 digit number, there are chances of mistakes in day to day life. However, ISO has introduced the check digit, using which one can identify the correctness of the ISIN number. The check digit helps in identifying the errors in previous 11 bits.
Helen Adams Keller (June 27, 1880 â June 1, 1968) was an American author, political activist, and lecturer.
Helen Keller Biography. Helen Adams Keller was an American author, political activist, and lecturer. She was the worldâs first deaf-blind person to receive a bachelorâs degree. Keller traveled a lot and openly expressed her opinion about the inadmissibility of hostilities.