To solve this question we have to make deduct these 2 years. 2105 minus 1963 will give the answer.
You are 142 years old.
(1704 months are passed.)
From 1963 to 2105 there are 142 years. If you want to learn your age in 2105 (born in 1963) your age is 142.
Let's see what will be your age if you born +1 or -1 from that date.