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.
Since May 1888, Keller attended classes at the Perkins Institute for the blind. The 1892, Helen began to study at the Cambridge School for Young Ladies, which she graduated in 1900. In 1904, at twenty four Keller graduated from Radcliffe and became the first blind and deaf, ever received a bachelorâs degree.