what is the probability that it contains no cash prize?

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There are 1000 sealed envelopes in a box, 10 of them contain a cash prize of ₹ 100 each, 100 of them contain a cash prize of ₹ 50 each and 200 of them contain a cash prize of ₹ 10 each and rest do not contain any cash prize. If they are well shuffled and an envelope is picked up out, what is the probability that it contains no cash prize?
26
Nov
There are 1000 sealed envelopes in a box, 10 of them contain a cash prize of ₹ 100 each, 100 of them contain a cash prize of ₹ 50 each and 200 of them contain a cash prize of ₹ 10 each and rest do not contain any cash prize. If they are well shuffled [...]
Posted in: Chapter 14 - Statistics , Chapter 15 - Probability , Maths , NCERT Class 10 ,
Tags: 10 of them contain a cash prize of ₹ 100 each , 100 of them contain a cash prize of ₹ 50 each and 200 of them contain a cash prize of ₹ 10 each and rest do not contain any cash prize. If they are well shuffled and an envelope is picked up out , There are 1000 sealed envelopes in a box , what is the probability that it contains no cash prize? ,