Letter of Refusal
The Principal
S.K.M. College
Mahboob Nagar
Subject: Regret for Inability to Accept Invitation
Dear Sir/Madam,
I am honored by your invitation to be the keynote speaker at the Annual Conclave on ‘Student Health – The Emotional Impact of Social Media’ at your esteemed institution. However, I regret to inform you that I am unable to accept the invitation due to prior professional commitments. I sincerely appreciate the opportunity and hope to contribute in the future. Wishing you great success with the event.
Yours sincerely,
Shyam Sundar
Professor of Psychology
Write a letter to the editor of a local newspaper expressing your concerns about the increasing “Pollution levels in your city”. You are an environmentalist, Radha/Rakesh, 46, Peak Colony, Haranagar. You may use the following cues along with your own ideas: 
A shop selling electronic items sells smartphones of only three reputed companies A, B, and C because chances of their manufacturing a defective smartphone are only 5%, 4%, and 2% respectively. In his inventory, he has 25% smartphones from company A, 35% smartphones from company B, and 40% smartphones from company C.
A person buys a smartphone from this shop
(i) Find the probability that it was defective.
How do the peddler from ‘The Rattrap’ and ‘the office boy’ from ‘Poets and Pancakes’ compare in terms of their frustration, status, and grudges against others?