1) Given below is a sequence in which some letters are missing .From the choices select the one that contains in order,the letters that can fill the blanks in the geiven series. ab_ _ a_ _ d_bc_a_ _d A) cdbcabbc B) cdbcadbc C) cdbacdbc D) cdabcbcd Answer: Option BExplanation:abcd abcd abcd abcd the given series divided into four parts each of 4 letters.