GWD31-7几道题，求解释，谢谢

lafuria

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)More than
of the 10 employees are women.(2)The probability that both representatives selected will be men is less than
.

If x is a positive integer, is the remainder 0 when 3^x + 1 is divided by 10?
(1)x = 4n + 2, where n is a positive integer.
(2)x > 4

Q36:

What is the sum of a certain pair of consecutive odd integers?

(1)At least one of the integers is negative.

(2)At least one of the integers is positive.