Introducing a boy, a girl said, “He is the only son of my mother’s mother. How is the girl related to the boy? A. Aunt C. Sister B. Niece D. Mother

A girl introduced a boy as the son of the daughter of the father of her uncle. The boy is girl's

Rita told Mani, The girl I met yesterday at the beach was the youngest dauhter of the brother-in-law of my friend's mother." How is the girl related to Rita's friend?

While travelling back to his residence in the car, Dr. Pathak was caught up in a thunderstorm. It became very dark. He stopped driving the car the waited for thunderstom to stop. Suddenly he noticed a child walking alone on the road. He asked the boy to come inside the car till the thunderstorm stopped. Dr. Pathak dropped the boy at his residence. The boy insisted that Dr. Pathak should meet hsi parents. The parents expressed their gratitude to Dr. Pathak for his concern for safety of the child. Answer the following questions based on the above information: (a) Why is it safer to sit inside a car during a thunderstorm? (b) Which two values are displayed by Dr. Pathak in his actions? (c ) Which values are reflected in parents response to Dr. Pathak ? (d) Give an example of a similar action on your part in the past from everyday life.

Number of boys in a school are 360 and the rest are girls. If the total strength of the school is 750, find the ratio of : a. the number of boys to the number of girls. b. the number of girls to the number of boys. c. the number of boys to all students in the school. d. all students in the school to the number of girls.

In a group of boys, two boys are brothers and six more boys are present in the group. In how many ways can they sit if the brothers are not to sit along with each other? a. 2xx6! b. ^7P_2xx6! c. ^7C_2xx6! d. none of these

The adjacent Figure shows a fixed pulley used by a boy to lift a load of 400 N through a vertical height of 5 m in 10 s. the effort applied by the boy on the other end of the rope is 480 N. (a) What is the velocity ratio of the pulley ? (b) What is the mechanical advantage ? (c) Calculate the efficiency of the pully. (d) Why is the efficiency of the pulley not 100% ? (e) What is the energy gained by the load in 10 s? (f) How much power was developed by the boy in raising the load ? (g) The boy has to apply an effort which is greater than the load he is lifting. what is the justification for using the pulley ?

Ana is a girls and has the same number of brothers as sisters. Andrew ia a boy and has twice as many sisters as brothers. Ana and Andrew are the children of Emma. How many children does Emma have?

Six boys and six girls sit in a row randomly. The probability that all girls sit together is a. 1/122 b. 1/112 c. 1/102 d. 1/132

Let U be the set of all boyes and girls in a school, G be the set of all girls in the school, B be the set of all boys in the school and S be the set of all students in the school who take swimming. Some but not all, students in the school take swimming. Draw a Venn diagram showing one of the possible interrelationship among sets U, G, B and S.

In a college, out of 4320 students, 2300 are girls. Find the ratio of(a) Number of girls to the total number of students.(b) Number of boys to the number of girls(c) Number of boys to the total number of students