Analogy

Second is the mark used for the first.

Sapling is young Tree and Bud is young Flower.

First is used to prepared second. As ‘Grease’ is prepared from ‘Wax’ in the same way ‘Curd’ is prepared from ‘Milk’.

First refers to the loss of second.

First term is double of second term. hence fourth term will be = (1/3)*(1/2) = 1/6

First writes and edits all the articles of the second.

As ‘Conduction’ is the property found in ‘Metal’ in the same way ‘Inflammability’ is the property found in ‘Plastic’.

Ink flows in Pen in same way as Blood flows in Vein.