a question paper consist of 15 questions with internal choice

• Som1 plz send me infosys paid material on rsrishabhsingh10@gmail.com,its a humble request ,my exam is on 25
• 6 years agoHelpfull: Yes(0) No(4)
• Each question can be answered in 3 ways(2 choices + 1 non-attempt). Therefore there are total of 3^15 ways
  In these 3^15 ways there is exactly one way the student does not attempt any question
  
  Therefor, required number of ways =3^15-1
• 5 years agoHelpfull: Yes(0) No(1)
• cont=x,22-x
  after 1 year,
  4x,22-x+(22-x)*200/100
  4x,66-3x
  4x>66-3x
  min value of x=10
  so 1 year back
  x=10,22-x=12
• 5 years agoHelpfull: Yes(0) No(1)