1) If x + 2y = 2x + y, then x2 /y2 is equal to

2) The missing fraction in the series given below is:

4 / 39 , 9 /20 , .......,39/86

3) In a family , a couple has a son and daughter. The age of the father is three times that of his daughter and the age of the son is half of his mother. The wife is nine years younger to her husband and the brother is seven years older than his sister. What is the age of the mother?

4) Out of the three annual examination, each with a total of 500 marks, a student secured average marks of 45% and 55% in the first and second annual examinations.

To have an overall average of 60%, how many marks does the student need to secure in the third annual examination?

5) If 15 pumps of equal capacity can fill a tank in 7 days, then how many extra pumps will be required to fill the tank in 5 days?

6) A man purchases two clocks A and B at a total cost of ` 650. He sells A with 20% profit and B at a loss of 25% and gets the same selling price for both the clocks.

What are the purchasing prices of A and B respectively?

7) An accurate clock shows the time as 3.00. After hour hand has moved 135°, the time would be

8) There are 50 students admitted to a nursery class.

Some students can speak only English and some can speak only Hindi. 10 students can speak both English and Hindi. If the number of students who can speak English is 21, then how many can speak Hindi, how many can speak only Hindi and how many can speak only English?

9) The number of times in a day the Hour-hand and the Minute-hand of a clock are at right angles, is

10) A survey was conducted on a samples of 1000 persons with reference to their knowledge of English, French and German. The results of the survey are presented in the given Venn diagram. The ratio of the number of the persons who do not know any of the three languages to those who know all the three language, is