My cousin is $3$ years and $7$ months older than me. My sister is $1$ year $6$ months younger than me. I am $9$ years $5$ months old. Find the age of my cousin?

My grandfather is $66$ years old. My father is $25$ years younger than him. So, how many years old is he?

Given below is the birth certificate of a child named Arpit.

Look it carefully and fill the blank given below:
 

If the age of Arpit is $k$ years old in $2020$, then the value of $k$ is _____.

If Bincy will be eight years old on $02/05/k$, what is the value of $k$?

Thomas Alva Edison was born in $1847$. He invented the electric bulb. How old he was when he invented the electric bulb at $1879$?

Ram is $8$ years old. His grandfather is $62$ years older than him. How old is his grandfather in years?

If the present year is $2020$, then how old is Benny$?$ If Benny is $k$years, then find $k$.

Given below is the birth certificate of a child named Arpit.

Look it carefully and fill the blank given below:

How old will he be on $18$th September, $2019$ $?$ 

_____ years old.

Aryan was born on $20\mathrm{th}$ July $2012$.

How old will he be on $20/07/2017?$

Look at the birth certificate of Bincy.

How many months old was Bincy on $2$ August $2002$$?$

Aryan was born on $20\mathrm{th}$ July $2012$.

On what date will he be  $9$ years old$?$ 

There are four very old cave-paintings. The older one is