What is the next number of the following sequence
1,3,4,5,6,7,8,9,1,9,16,25,36,49,64...	Pick:  A) 14  B) 15  C) 81  D) 17  E) 18
(1, 3 ,4, 5, 6, 7, 8, 9) (1, 9,16, 25, 36, 49, 64, x)   square of 1st group gives 2nd group   1^2 = 1   3^2 = 9   4^2 = 16   5^2 =25   6^2 =36   7^2 = 49   8^2=64   9^2=81   ANSWER:81
<result>C</result>
What is the next number of the following sequence
1,3,4,5,6,7,8,9,1,9,16,25,36,49,64...