MY CART (5)

Use Coupon: CART20 and get 20% off on all online Study Material

ITEM
DETAILS
MRP
DISCOUNT
FINAL PRICE
Total Price: Rs.

There are no items in this cart.
Continue Shopping
Menu
Grade: 12
        

an inefficient secretary places  5 different letters into 5 different addressed envolopes at random find the probability that atleast one of the letters will arrive proper destination

10 years ago

Answers : (1)

AskiitianExpert Shine
10 Points
							

Hi

the probability that atleast one of the letter goes in the right envelope = 1- (probability that none of the letters go in the right envelope)
now, total ways = 5! = 120
ways that none of the letters go in the right envelope = 4! = 24
probability that none of the letters go in the right envelope = 24/120 = 1/5
probability that atleast one of the letter goes in the right envelope = 1 - 1/5 = 4/5

10 years ago
Think You Can Provide A Better Answer ?
Answer & Earn Cool Goodies


Course Features

  • 731 Video Lectures
  • Revision Notes
  • Previous Year Papers
  • Mind Map
  • Study Planner
  • NCERT Solutions
  • Discussion Forum
  • Test paper with Video Solution


Course Features

  • 101 Video Lectures
  • Revision Notes
  • Test paper with Video Solution
  • Mind Map
  • Study Planner
  • NCERT Solutions
  • Discussion Forum
  • Previous Year Exam Questions


Ask Experts

Have any Question? Ask Experts

Post Question

 
 
Answer ‘n’ Earn
Attractive Gift
Vouchers
To Win!!! Click Here for details