P+Q mean P is the brother of Q; P-Q means P is the mother of Q and P*Q means P is the sister of Q.Which of the following means M is the maternal uncle or R?
In a certain college the number of girls is twice the number of boys. 1/5th of the girls and 1/8th of the boys took part in a social camp. What part of the total number of students took part in the camp ?