Mathematics Mcqs for PPSC, FFPS, NTS

P can lay railway track between two stations in 16 days. Q can do the same job in 12 days. With the help of R, they completes the job in 4 days. How much days does it take for R alone to complete the work?

A. 9(3/5) days
B. 9(1/5) days
C. 9(2/5) days
D. 10 days

If the volume and surface area of a sphere is numerically the same then it’s radius is_________?

A. 1 unit
B. 2 units
C. 3 units
D. 4 units

A right cylinder and a right circular cone have the same radius and the same volume. The ratio of the height of the cylinder to that of the cone is_________?

A. 3: 5
B. 2: 5
C. 3: 1
D. 1: 3

The radius of a circular cylinder is the same as that of a sphere. Their volumes are equal. The height of the cylinder is________?

A. 4/3 times its radius
B. 2/3 times its radius
C. Equal to it’s radius
D. Equal to it’s diameter

The number of solid spheres each of diameter 6 cm, that could be moulded to form a solid metal cylinder of height 45 cm and diameter 4 cm is?

A. 3
B. 4
C. 5
D. 6

The length of the wire of 0.2mm radius that can be drawn after melting a solid copper sphere of diameter 18cm?

A. 24.3 m
B. 243 m
C. 2430 m
D. 24300 m

The radius of a wire is decreased to one –third if volume remains the same length will increase

A. 1 Time
B. 3 times
C. 6 times
D. 9 times

If the volumes of two cubes are in the ratio 8: 1, the ratio of their edges is_________?

A. 8: 1
B. 2√2 : 1
C. 2 : 1
D. None of these

A metal sheet 27 cm long 8cm broad and 1 cm thick is melted into a cube. The difference between the surface areas of two solids is__________?

A. 284 cm2
B. 286 cm2
C. 296 cm2
D. 300 cm2

A wooden box of dimensions 8m x 7m x 6m is to carry rectangular boxes of dimensions 8cm x 7cm x 6cm. The maximum number of boxes that can be carried in 1 wooden box is?

A. 1200000
B. 1000000
C. 9800000
D. 7500000