Answer
$P(structure~with~2~components~will~succeed)=0.9775$
Work Step by Step
At least one of the 2 components must succeed.
The event "at least one of the 2 components succeeds" is the complement of "both components fail".
$P(both~components~fail)=P(two~components~fail)=0.0225$
Using the Complement Rule (see page 275):
$P(structure~with~2~components~will~succeed)=P(at~least~one~of~the~2~components~succeeds)=1-P(both~components~fail)=1-0.0225=0.9775$
