1) The given diagram shows the number of students who failed in an examination comprising papers in English, Hindi and Mathematics. The total number of students who took the test is 500. What is the percentage of students who failed in atleast two subject?

2) 9. If x = –2, then x3 – x2 – x – 1 is equal to

3) The monthly income of Komal and Asha are in the ratio of 4 : 3. Their monthly expenses are in the ratio of 3 : 2. However, both save ` 600 per month. What is their total monthly income?

4) An accurate clock shows 8 O' clock in the morning.

Throughout how many degrees will the hour hand rotate, when the clock shows 20' clock in the afternoon?

5) A club has 108 members. Two-thirds of them are men and the rest are women. All members are married except for 9 women members. How many married women are there in the club?

6) In an examination, every candidate took Physics or Mathematics or both. 65.8% took Physics and 59.2% took Mathematics. The total number of candidates was 2000. How many candidates took both Physics and Mathematics?

7) In a town 25% families own a phone and 15% own a car. 65% families own neither a phone nor a car. 2000 families own both a phone and a car. Consider the following statements in this regard: [1999] 1. 10% families own both a car and a phone 2. 35% families own either a car or a phone 3. 40,000 families live in the town Which of the above statements are correct?

8) In the sequence of numbers 5, 8, 13, X, 34, 55, 89, . . ., the value of X is

9) Amar, Akbar and Anthony are friends, being looked after by a matron Farah, Amar weighs 50% more than Akbar and Anthony weighs 25% less than Amar. Farah weighs a third of the combined weight of the three boys. All four together weigh 232kg. The correct arrangement of the persons in the ascending order of their weights, is :

10) In an office, the distribution of work hours is as shown in the following table

Members              Work hours

5                                 0 - 19

1                                20 - 24

25                              25 - 29

40                              30 - 34

15                              35 - 39

8                                40 - 45

Consider the following inferences drawn from the table:

1. The average number of hours worked by a staff member is about 30

2. The percentage of those who worked 3.5 or more hours is less than 25

3. At least 5 staff members worked more than 44 hours

Which of these inferences is/are valid?