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.
This article is about the teacher and companion of Helen Keller. For other uses, see Anne Sullivan (disambiguation). Johanna Mansfield Sullivan Macy (April 14, 1866 â October 20, 1936), better known as Anne Sullivan, was an American teacher, best known for being the instructor and lifelong companion of Helen Keller. At the age of five, she contracted trachoma, a highly contagious eye disease, which left her blind and without reading or writing skills.