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.
Keller went on to learn how to read, write and speak. With Sullivanâs assistance, Keller attended Radcliffe College and graduated with honors in 1904. Helen Keller became a public speaker and author; her first book, âThe Story of My Lifeâ was published in 1902. She was also a fundraiser for the American Foundation for the Blind and an advocate for racial and sexual equality, as well as socialism.