Which set of numbers would most logically fill the blanks the following series - 101 99 102 98 103 97 _ _ 105 95 104 94

Question

Which set of numbers would most logically fill in the blanks in the following series?
101, 99, 102, 98, 103, 97, _ , _ ,105, 95, 104, 94
(a) 101 98
(b) 104 96
(c) 106 99
(d) none of these

Please provide your reasoning also?

Answer 1

Sequence will follow pattern like
{{ - 2 , + 3 , -4 , + 5 , -6 , + 7 , -8 , + 9 , -10 , + 11 , -12 ....
101 , 99, 102, 98, 103, 97, 104_ , 96 _ , 105, 95, 106, 94

Answer 2

b

Cause from right to left each second digit is 1 higher than the one before:
94, 95, ..., 97, 98, 99
From left to right its 101, 102, 103, ..., 105

But im not totaly sure, beacause there is a 104 in the row, it woult just be the logical anwser for me xD

Answer 3

the answer is 104 96

Answer 4

b) 104, 96
first ascending, then decending.
therefore, 101,102,103,104 - Ascending
99,98,97,96 - Decending