Identify and write the “common property” of the following collection:

Thumb, index finger, middle finger, ring finger, pinky

Observe the following collection and mention as many generalised statements as you can to describe their more properties:

$2, 4, 6, 8, \dots$

Observe the following collection and prepare as many generalised statements as you can to describe their more properties:

$1, 4, 9, 16,\dots$

Write the set for the following:

Set of the first five positive integers.
 

Write the set for the following:

Set of multiples of $5$ which are more than $100$ and less than $125$.
 

Write the set for the following:

Set of first five cubic numbers.
 

Write the set for the following:

Set of digits in the Ramanujan number.

 Decide to which number sets the given number belong and do not belong and express with correct symbols:

$1$

 Decide to which number sets the given number belong and do not belong and express with correct symbols:

$0$