Data Sufficiency

Hello,

Can someone help me answer the following questions on data sufficiency?
Please also provide explanation on how you arrived at the answer.

Q.1 A box contains 10 light bulbs, fewer than half of which are defective. Two bulbs are to be drawn simultaneously from the box. If n of the bulbs in box are defective, what is the value of n?
(1)The probability that the two bulbs to be drawn will be defective is 1/15.
(2) The probability that one of the bulbs to be drawn will be defective and the other will not be defective is 7/15.

Q2. If 2 different representatives are to be selected at random from a group of 10 employees and if p is the probability that both representatives selected will be women, is p > 1/2?
(1)More than 1/2 of the 10 employees are women.
(2)The probability that both representatives selected will be men is less than 1/10

Q3. What is the probability that a student randomly selected from a class of 60 students will be a male who has brown hair?
(1)One-half of the students have brown hair.
(2)One-third of the students are males.


Thanks
MSD