Find the missing number in the following sequences:   1) 61, 52, 63, 94, __ , 18, 001, 121 [CSIR NET, June, 2014, Mathematical Sciences.] A) 46 B) 70 C) 64 D) 44   2) 4, 2, 6, 8, 14, __ , 36 A) 16 B) 12 C) 22 D) 30   3) 72, 46, __ , 612, 343