• # question_answer Which of the following statements is INCORRECT?                      A) For natural numbers a and b, if a divides ${{b}^{2}}$then a divides b.          B) For any natural number $n,\,\sqrt{n-1}+\sqrt{n+1}$is irrational.C)  Product of distinct prime numbers is always equal to their L.C.M.D)  For any natural number n, ${{6}^{n}}$ never ends with digit zero.

If a (any prime number) divides ${{b}^{2}}$ and b is natural number, then a divides b.