Find the unit digit of given expression: x2 - 3x3 + 82, if (x – 3) = 0.
1). 6
2). 4
3). 1
4). 0
A dealer marks the price of an article 40% more than the cost price. He allows 10% commission, his profit percent is
1). 26%
2). 30%
3). 36%
4). 40%
An angle is 30° more than half of its complement. Find the difference between the greater and the smaller angles?
1). 10°
2). 20°
3). 30°
4). 25°
By melting a solid lead sphere of diameter 12 cm, three small spheres are made whose diameters are in the ratio 3 : 4 : 5. The radius (in cm) of the smallest sphere is
1). 3
2). 6
3). 1.5
4). 4
The volumes of a cylinder and a cone are in the ratio 3 : 1. Compare their diameters if their heights are equal.
1). Diameter of cylinder < Diameter of cone
2). Diameter of cylinder = 2 times of diameter of cone
3). Diameter of cylinder = Diameter of cone
4). Diameter of cylinder > Diameter of cone