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.
Anne Sullivan would let Helen Keller feel an object, and then she finger-spelled the word to the object into Helen's eager hands. A few repetitions were usually enough for Helen to learn the word. But verbs were not as easy for Helen to learn or for Annie to teach.