The rule related to this problem is when it states 101 or 102 , that means the amount of zeroes behind the given number .
For example 103 would be 1000 because 10 x 10 x 10 = 1000
So, in this particular problem the answer would be number 3 because 103 = 1000 so then you have 6 × 1000 which then = 6000
Hope this helps!
