Previous Year Papers

Download Solved Question Papers Free for Offline Practice and view Solutions Online.

Test Series

Take Zigya Full and Sectional Test Series. Time it out for real assessment and get your results instantly.

Test Yourself

Practice and master your preparation for a specific topic or chapter. Check you scores at the end of the test.

The front compound wall of a house is decorated by wooden spheres of diameter 21 cm, placed on small supports as shown in figure. Eight such spheres are used for this purpose, and are to be painted silver. Each support is a cylinder of radius 1.5 cm and height 7 cm and is to be painted black. Find the cost of paint required if silver paint costs 25 paise per cm² and black paint costs 5 paise per cm².

127 Views

402. The diameter of a sphere is decreased by 25%. By what per cent does its curved surface area decrease?

185 Views

403. Find the mean of the following marks of 20 students on a screening test, (out of 100) 76, 44, 45, 87, 71, 72, 82, 83, 41, 32, 75, 32, 46, 78, 17, 70, 84, 12, 77, 74

Mean

$fraction numerator table row cell 76 plus 44 plus 45 plus 87 plus 71 plus 72 plus 82 end cell row cell plus 83 plus 41 plus 32 plus 75 plus 32 plus 46 plus 78 end cell row cell plus 17 plus 70 plus 84 plus 12 plus 77 plus 74 end cell end table over denominator 20 end fraction equals 1198 over 20 equals 59.9$

106 Views

404. The mean of 10, 12, 16, 20, p and 26 is 17. Find the value of p.

146 Views

Long Answer Type

405.

Find the mean of each of the following distributions :

(i)

x_i	10	15	20	25	30	35	40	Total
f_i	4	6	8	18	6	5	3	50

(ii)

x_i	12	13	14	15	16	17	18	Total
f_i	1	3	4	8	10	3	1	30

(iii)

x_i	50	75	100	125	150	175	200	Total
f_i	12	18	50	70	25	15	10	200

84 Views

Short Answer Type

406.

The following data have been overanged in ascending order. If the median of these data is 63, then find the value of x : 29, 32, 48, 50, x, x + 2, 72, 78, 84, 95

98 Views

407.

Find the median of the following data:

95, 65, 75, 70, 75, 100, 50, 40.

257 Views

408. The mean of 40 observations was 160. It was detected on rechecking that the value 165 was wrongly copied as 125. Find the correct mean.

148 Views

409. 2 cubes each of volume 64 cm³ are joined end to end. Find the surface area of the resulting cuboid.

2531 Views

410. A vessel is in the form of a hollow hemisphere mounted by a hollow cylinder. The diameter of the hemisphere is 14 cm and the total height of the vessel is 13 cm. Find the inner curved surface area of the vessel.

1875 Views