What work can one never finish?

Can you divide the below-given shape into four equal and identical pieces?

Why is 6 afraid of 7?

Katrina wants to go on a date and prefers her date to be tall, dark and handsome.

Of the preferred traits - tall, dark and handsome - no two of Shahrukh, Ajay, Salman and Akshay have the same number.
Only Shahrukh or Akshay is tall and fair.
Only Ajay or Salman is short and handsome.
Shahrukh and Salman are either both tall or short.
Ajay and Akshay are either both dark or both fair.
Who is Katrina's date?

Can you make four (4) nines (9) equal 100?

Transform the word THINK into BRAIN while changing only one letter at a time in a manner that each of the word in the process is a real word!!!

If Japan and Panama decided to merge into a single country, probably people will name it Japanama.

Can you think of two more such country's unions that could produce similar names like Japanama by overlapping their three letters?

Two in a corner, one in a room, zero in a house, but one in a shelter. What is it?

Which is faster, Heat or Cold ? Explain.

When my father was 31 I was 8. Now he is twice as old as me. How old am I?