in a group 6 out of 10 men wear glasses and 5 out of 12 women wear glasses. if two people are chosen at random from the group what is the probability that they are either both men or both wear glasses.

probability that they are both men = 10/22*9/21 =15/77

probability that they both wear glasses. = 11/22 * 10/21 =5/21

or=+

15/77 + 5/21 =100/231 =not the right answer