[填空题]
The Future House factory produces LED ligzr jprdb 5 2)nk :n2t8n*,ubuxht strips, 5 \% of which aek9i/4gj ulz,:yein/. v+vv-s a l uh:re found to byelu +e:ih:gzia.4,9 j/vvu-n/v k lse defective.
1. Write down the probability that a light strip produced by Future House is not defective.
Jack buys two light strips produced by Future House.
2. 1. Find the probability that both light strips are not defective. ≈
2. Find the probability that at least one of Jack's light strips is defective.
The Kingstar Lighting factory also produces LED light strips. The probability that a light strip produced by Kingstar Lighting is not defective is p . John buys three light strips produced by Kingstar Lighting.
3. Write down an expression, in terms of p , for the probability that at least one of John's three light strips is defective.
