There are 20 lamps in a hall. Each one of them can be switched on independently. The number of ways in which the hall ca

Ask a Question


Question Asked by a Student from EXXAMM.com Team


Q 2316280170.     There are 20 lamps in a hall. Each one of them can be switched on independently. The number of ways in which the hall can be illuminated is:
IBPS-PO 2017 Mock Mains
A

1022654

B

1048575

C

1024554

D

2048645

E

None of these

HINT


Solution
(Provided By a Student and Checked/Corrected by EXXAMM.com Team)

Find instant solution to any question from our database of 1.5 Lakh + Questions

 


Access free resources including

  • 100% free video lectures with detailed notes and examples
  • Previous Year Papers
  • Mock Tests
  • Practices question categorized in topics and 4 levels with detailed solutions
  • Syllabus & Pattern Analysis

Engineering


Medical


Banking


DEFENCE


SSC


RRB


CBSE-NCERT


OLYMPIAD