In the following series how many times the sum of two consecutive digits is even?
1 2 3 4 6 3 4 2 5 9 3 6 7 4 1 2 3 6 7 6 5 4 3  Answers:
A) 5
B) 2
C) 3
D) 4
E) 6
4+6   4+2   5+9   9+3   so 4 times   ANSWER:4
<result>D</result>
In the following series how many times the sum of two consecutive digits is even?
1 2 3 4 6 3 4 2 5 9 3 6 7 4 1 2 3 6 7 6 5 4 3