Showing posts with label Maths. Show all posts

Place value and Face value

Q. The difference between the place value and the face value of 6 in the numeral 856973 is
a) 973
b) 6973
c) 5994
d) none of these.

Altitude of equilateral triangle

Q. Each side of equilateral triangle is 6 cm. Its altitude is
a) 63
b) 33
c) 23
d) 3

Largest diagonal of cuboid

Q. The length, breadth and height of a box are respectively 14 m, 12 m, 13 m. The length of the greatest rod that can be put in it is
a) 22.31 m
b) 22.56 m
c) 20 m
d) 19.5 m

Volume Utilized

Q. From a solid wooden right circular cylinder, a right circular cone whose radius and height are same as the radius and height of the cylinder respectively, is carved out. What is the ratio of the volume of the utilized wood to that of the wasted wood?
a) 1 : 2
b) 2 : 1
c) 2 : 3
d) 1 : 3

Volume of sphere

Q. A solid spherical ball of radius 4cm is melted to form spheres of radius 2cm each. The number of spheres so formed is
a) 8
b) 9
c) 10
d) 16

Trignometry

Q. If cosA+ cos2A =1, then what is 2(sin2A + sin4A) equal to?
a) 4
b) 2
c) 1
d) 1/2

CDS 2013

Q. The LCM of two numbers is 2376 while their HCF is 33. If one of the two numbers is 297, then the other number is
a) 216
b) 264
c) 642
d) 792

Height and distance

Q. If the height of a pole is 2√3 meters and the length of its shadow is 2 meters, find the angle of elevation of the sun.