Помогите с заданием пожалуйста

В каких функциях употреблено причастие 1, в приведённых ниже предложениях
1. Following this method you can obtain positive result.
2. Smiling girls are nice.
3. Answering the last question the student failed

Уважаемые коллеги!
Подскажите, пожалуйста, какими пособиями пользуетесь Вы для подготовки Ваших студентов к экзамену IELTC. Мне нужно подготовить мальчика 10 класс, уровень intermediate к сдаче IELTC, Academic, не ниже 6.5 — 7.5 (уровень upper-intermediate — advanced). В магазинах обычно так много пособий, что глаза разбегаются. С уважением, Татьяна

The product of 13 integer numbers is positive. From this intormation we can
deduce that it is necessarily true that:
a)If (a) all factors are positive.
b) one factor is positive and 12 factors are
negative.
(с) 7 factors are positive and 6 factors are
negative.
(d) there is an odd number of positive
factors (in the product),
(е) at least two factors are negative.
Which answer is correct and why ?

0 1. As a result, production and jobs in some industries were shifted to other countries. 2. Money for this program is collected by a special tax, paid equally by employer and employee. 3. Licensing is very attractive for firms lacking the capital to develop operations overseas. 4. Booming house prices hurt first-time buyers much more than those already on the property ladder. 5. This investment strategy has worked extremely well, producing an annual return of 17% since 2005.