To solve this question we have to make deduct these 2 years. 2120 minus 1965 will give the answer.
You are 155 years old.
(1860 months are passed.)
From 1965 to 2120 there are 155 years. If you want to learn your age in 2120 (born in 1965) your age is 155.
Let's see what will be your age if you born +1 or -1 from that date.