Q. 166. The number of students admitted in different faculties of a college are given below. Draw a pie-chart to represent this:
Faculty-No. of Students : Science-1000 Arts-1200 Commerce-650 Law-450 Education-300
Q. 167. The below given data represents the division of the sector-angles related to the marks obtained in different subjects by a
student in an examination. If the total marks obtained by the student are 540, then answer the connected questions:
Subjects-Angles :Mathematics-900Social Science-800Science-650Hindi-700 English-55˚
(i) In which subject the student scored 105 marks? (ii) How many more marks are obtained in Mathematics than in Hindi?
Q. 168. Compute the mean of the following data by using step deviation method:
| Expenditure (In Rs) : | 100-150 | 150-200 | 200-250 | 250-300 | 300-350 | 350-400 | 400-450 | 450-500 |
| No. of Students: | 24 | 40 | 33 | 28 | 30 | 22 | 16 | 7 |
Q. 169. Compute the mean of the following data:
| Class - intervals: | 4-8 | 8-12 | 12-16 | 16-20 | 20-24 | 24-28 | 28-32 | 32-36 |
| No. of Students: | 2 | 12 | 15 | 25 | 18 | 12 | 13 | 3 |
Q. 170. If the mean of the following data is 18.75, find the value of p:
| Variable:: | 10 | 25 | p | 25 | 30 |
| Frequency: | 5 | 10 | 7 | 8 | 2 |
Q. 171. If the mean of the following data is 52, find the missing frequency:
| Wages:(In Rs.) | 10-20 | 20-30 | 30-40 | 40-50 | 50-60 | 60-70 | 70-80 |
| No. of Workers: | 5 | 3 | 4 | - | 2 | 6 | 13 |
Q. 172. Three coins are tossed once. What is the probability of getting the following: (i) at least one head? (ii) at most two heads? (iii) even no. of heads? (iv) at least two tails? (v) one head and one tail? (vi) all same faces? (vii) more heads than tails?
Q. 173. Tickets numbered from 1 to 35 are mixed thoroughly and a ticket is drawn. What is the probability of getting a number:
Q. 174. A card is drawn from a pack of 52 cards. Find the probabability of getting: (i) a red card? (ii) a black king? (iii) an ace? (iv) ‘7’ or ‘3’ of clubs? (v) either red or king? (vi) queen of hearts? (vii) either red or black? (viii) either diamond or king?
Q. 175. A bag contains 10 red, 15 black, 6 yellow and 4 blue balls. If one ball is drawn from this bag, what is the probability of: (i) getting a blue ball? (ii) either red or blue ball? (iii) one red and one yellow ball? (iv) not a black ball? (v) not a blue ball?
| Chapter 1 | Chapter 2 | Chapter 3 |
| Chapter 4 | Chapter 5 | Chapter 6 |
| Chapter 7 | Chapter 8 | Chapter 9 |
| Chapter 10 | Chapter 11 | Chapter 12 |
| Chapter 13 | Chapter 14 | Chapter 15 |
| Chapter 16 |
