Question 1058552
The common factor of the progression is 6/12 = 1/2


Since the third term is 12, the second term is 12/(1/2) = 24.


Since the second term is 24, the first term is 24/(1/2) = 48.


And since the 4th term is 6, the fifth term is 6(1/2) = 3.


The first five terms of the progression are then:


48, 24, 12, 6, 3