The lifetime (in hours) Y of an electronic component is a random variable with density function given by f(y)={¦(1/100 e^((-y)/100), if 0≤y@ @0, o/w)¦ Three of these components operate independently in a piece of equipment. The equipment fails if at least two of the components fail. Find the probability that the equipment will operate for at least 200 hours without failure.