What is the rational number equal to 0.712712712 .................a

A candidate appearing for an examination has to secure 40% marks to pass paperI. But he secured only 40 marks and failed by 20 marks. What is the maximum mark for paper I?

One fourth percent of 180 is:

Cube of 1/4 is:

The difference between 6 times and 8 times of a figure is 14. What is the figure?