30. Refer to Q.29 above : The probability that bulbs selected randomly from the lot has life less than 900 hours is : 30. Refer to Q.29 above : The probability that bulbs selected randomly from the lot has life less than 900 hours is : July 3, 2021 Category: Chapter 14 - Statistics , Chapter 15 - Probability , Maths , NCERT Class 9 , Facebook Messenger WhatsApp Share this:TwitterFacebook Related