Answer:
(a)


(b)


(c)


Step-by-step explanation:
(a) This is a sequence of consecutive number



(b) This is a sequence of 2 to the power of n - 1. The next number is twice time of this number



(c) This is factorial sequence. Where the next number is this number multiplied by 



Answer:
3i √3
Step-by-step explanation:
you can't have the square root of a negative number
so we use "i"
ummmmmm you dont need the explanation and I'd rather not type but trust me its d, good luck!
The answer is 10, you would multiply 8 by 2 because 8 represents N , it would be 16-6