The number of surfaces of a hollow cylindrical object is (a) 1          (b)   2               (c)  3                 (d)  4

The number of surfaces in right cylinder is (a) 1 (b) 2 (c) 3 (d) 4

The number of surfaces in right cylinder is (a) 1 (b) 2 (c) 3 (d) 4

The number of surfaces of a cone has, is (a) 1 (b) 2 (c) 3 (d) 4

The number of surfaces of a cone has, is (a) 1 (b) 2 (c) 3 (d) 4

A water tank open at the top is hemispherical at the bottom and cylindrical above it.If radius of the hemisphere is 12m and the total capacity of the tank is 3312 pi backslash m^(3), then the ratio of the surface areas of the hemispherical and the cylindrical portions is (a) 1:1 (b) 3:5 (c) 4:5 (d) 6:5

[ The number of real solutions of x^(2)-4|x|-2=0 is [ (a) 1, (b) 2 (c) 3, (d) 4]]

In a sphere the number of faces is 1 (b) 2 (c) 3 (d) 4

In a sphere the number of faces is 1 (b) 2 (c) 3 (d) 4

The number of real solutions of |2x-x^(2)-3|=1 is 0(b)2(c)3(d)4

If a group of n distinct objects, the number of arrangements of 4 object is 12 times the number of arrangements of 2 objects, then the number of objects is (a) 10 (b) 8 (c) 6 (d) none of these