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.
SHARES. Hellen Keller, who became blind and deaf at 18 months, met Alexander Graham Bell when she was a child and her parents contacted the famous inventor for his help. Bell connected the Keller family with the Perkins Institute through which Helen met her teacher Anne Sullivan.