A number sequence is shown below
3,7,3,7,4,3,7,3,7,4,3,7,3,7,4………
What is the sum of the first 126 numbers?
 Look at the number pattern below
Column A 
Column B 
Column C 
Column D 

1 
2 
3 
7 
6 
5 
4 
8 
9 
10 
11 
15 
14 
13 
12 
16 
17 
18 
19 
… 
… 
… 
… 
In which column will the number ‘909’ appear?
Can anyone help with this problem?