261 If six persons sit in a row, then the probability that three particular persons are always together is____________? Mathematics Medium Full question → A 1/20 B 3/10 C 1/5 D 4/5
262 If a card is drawn from a well shuffled pack of cards, the probability of drawing a spade or a king is__________? Mathematics Medium Full question → A 19/52 B 17/52 C 5/13 D 4/13
263 If four coins are tossed, the probability of getting two heads and two tails is__________? Mathematics Medium Full question → A 3/8 B 6/11 C 2/5 D 4/5
264 A gardener was asked a plant flowers in a row containing equal number of plants. He tried to plant 6, 8, 10 and 12 in each row, but 5 plants left in each case. When he planted 13 in a row, no plant was left. Find the number of plants with him? Mathematics Medium Full question → A 245 B 125 C 485 D 845
265 If the volume and surface area of a sphere is numerically the same then it’s radius is_________? Mathematics Medium Full question → A 1 unit B 2 units C 3 units D 4 units
266 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_________? Mathematics Medium Full question → A 3: 5 B 2: 5 C 3: 1 D 1: 3
267 The radius of a circular cylinder is the same as that of a sphere. Their volumes are equal. The height of the cylinder is________? Mathematics Medium Full question → A 4/3 times its radius B 2/3 times its radius C Equal to it’s radius D Equal to it’s diameter
268 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? Mathematics Medium Full question → A 3 B 4 C 5 D 6
269 The length of the wire of 0.2mm radius that can be drawn after melting a solid copper sphere of diameter 18cm? Mathematics Medium Full question → A 24.3 m B 243 m C 2430 m D 24300 m
270 The radius of a wire is decreased to one –third if volume remains the same length will increase Mathematics Medium Full question → A 1 Time B 3 times C 6 times D 9 times
271 If the volumes of two cubes are in the ratio 8: 1, the ratio of their edges is_________? Mathematics Medium Full question → A 8: 1 B 2√2 : 1 C 2 : 1 D None of these
272 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__________? Mathematics Medium Full question → A 284 cm 2 B 286 cm2 C 296 cm 2 D 300 cm 2
273 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? Mathematics Medium Full question → A 1200000 B 1000000 C 9800000 D 7500000
274 If the length, breadth and the height of a cuboid are in the ratio 6: 5: 4 and if the total surface area is 33300 cm2, then length breadth and height in cms, are respectively? Mathematics Medium Full question → A 90, 85, 60 B 85, 75, 60 C 90, 75, 70 D 90, 75,60
275 The surface area of a cube is 726m2, its volume is? Mathematics Medium Full question → A 1300 m 3 B 1331 m3 C 1452 m 3 D 1542 m 3
276 The height of two right circular cones are in the ratio 1:2 and their perimeters of their bases are in the ratio 3:4, the ratio of their volume is_________? Mathematics Medium Full question → A 3:8 B 9:16 C 9:32 D 9:64
277 Surface area of two spheres are in the ratio 1:4 what is the ratio of their volumes? Mathematics Medium Full question → A 1:64 B 1:8 C 1:4 D 8:1
278 The diameters of two spheres are in the ratio 1:2 what is the ratio of their volumes? Mathematics Medium Full question → A 3:4 B 9:16 C 1:8 D 4:3
279 The diameters of two spheres are in the ratio 1:2 what is the ratio of their surface area? Mathematics Medium Full question → A 1:2 B 1:4 C 2:1 D 4:1
280 The sides of a cube are in the ratio 1:2 the ratio of their volume is__________? Mathematics Medium Full question → A 1:2 B 1:4 C 1:8 D 2:1