All Possible Selections

The number of all the possible selections which a student can make for answering one or more questions out of eight given questions in a paper, when each question has an altrenative, is

Consider all possible permulations of letter of the word ENDEANOEL.

Find all possible solutions of x^2=e^(y')

Should computers be used in all possible sectors in india ?

In the following rearrangement code, ‘what will, yoii do if he has more options’ gets coded as ‘what do you will he if options more has’. Which of the following would be coded as 'I will try to attract all the possible options? 1) I to try will all attract possible options the 2) I try to will all attract options possible the 3) I to try will attract all options possible the 4) I to tiy will all attract options possible the 5) None of these

Draw all the possible lines of symmetry of an equilateral triangle.

Draw all the possible lines of symmetry of the letter H.