NCERT 10 MATH MCQ

Q 1. If an unbiased coin is tossed then the event of getting a 'head' or 'tail' is called impossible event elementary event complementary event certain event Q 2. Which one of the following cannot be the probability of an event? 1.1 0.1 0.9 5% Q 3. If the probability of winning a game is 0.3, then the probability of losing it is: 0.5 0.2 0.7 0.3 Q 4. If the probability of winning a game is 0.995, then the probability of losing is 1 0.05 0.005 0 Q 5. Find the probability of getting one if a dice thrown 1000 times? 0.5 0.18 0.13 1 Q 6. The probability of an event that is certain to happen is -1 2 1 0 Q 7. An urn contains lottery tickets numbered from 1 to 100. If a ticket is selected at random, then the probability that it is a perfect square is 0.01 0.08 0.09 0.1 Q 8. A bag contains 12 balls out o...

Q 1. The mean of a data set with 10 observations is calculated as 17.85. If one more value is included in the data, then for the new data with 11 observations, mean becomes 18.50. Value of this 11 th  observation is 24 26 25 28 Q 2. If the mean of the following distribution is 2.6, then the value of y is Variable (x) 1 2 3 4 5 Frequency 4 5 y 1 2 3 8 13 24 Q 3. The value of the observation having greatest frequency is called____. Mean Median Mode All of above Q 4. Find out the mode of the following data:  Wages Less than 200 300 400 500 600 700 800 900 No. of workers 5 18 38 70 90 95 98 100 450 400 478 600 Q 5. The point of intersection of a less than ogive and more than ogive is (12, 15). The value of median is 12 15 12.5 15.5 Q 6. Age (in yrs.) 12 13 14 15 16 No. of students 2 7 3 4 2 Modal age of students in given distribution is 12 years 13 years 14 years 15 years Q 7. For a frequency distribution, mean, median ...

Q 1. A cylindrical vessel of diameter 42 cm and height 40 cm contains water up to a depth of 16 cm. Now a solid iron cylinder, with diameter 14 cm and height 32 cm is placed upright in the cylindrical vessel. The volume of the water required to just submerge the solid cylinder will be 14, 000 cm 3 15, 600 cm 3 16, 045 cm 3 17, 248 cm 3 Q 2. A circular tent is cylinder to a height of 4 m and conical above it. If its diameter is 105 m and its slant height is 40 m, then the area of canvas required is 1760 m 2 2640 m 2 3960 m 2 7920 m 2 Q 3. An iron ball of radius 10.5 cm is melted and recast into small cones, each of radius 3.5 cm and height 3 cm. The number of cones is 150 126 100 140 Q 4. The slant height of the frustum of a cone is 6 cm and the perimeter of its circular ends are 20 cm and 8 cm. Its curved surface area is 48 cm 2 84 cm 2 90 cm 2 54 cm 2 Q 5. A cylinder and a cone are of the same base radius, but the height of the cone is four ti...