In a parking area, the total number of wheels of all the cars (four-wheelers) and scooters/motorbikes (twowheelers) is 100 more than twice the number of parked vehicles. The number of cars parked is
(a) 35 (b) 45 (c) 50 (d) 55
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Some residents of your colony are planning to cut trees to create a place for parking vehicles.
(i) Importance of green plants, reducing air pollution, reducing noise levels, aesthetic value, sapling distribution, giving potted plants in place of bouquet, creating awareness. (Any three) (ii) To protect and improve...
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The number lock of a suitcase has 4 wheels, each labelled with ten digits i.e., from 0 to 9.
The number lock has 4 wheels, each labelled with ten digits i.e., from 0 to 9. Number of ways of selecting 4 different digits out of the 10 digits =10C4 Now, each...
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In rear-wheel drive cars, the engine rotates the rear wheels and the front wheels rotate only because the car moves.
(a) on the rear wheels is in the forward direction (b) on the front wheels is in the backward direction (c) on the rear wheels has a larger magnitude than the Explanation: When accelerating the torque...
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Bhuvan has some hens and some cows. If the total number of animal-heads are 71 and the total number of feet are 228,
(e) Let Bhuwan have x hens and y cows According to the question, x + y = 71 ...(i) 2 x + 4y = 228 ...(ii) Multiply equation (i) by 4 and subtract equation...
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Kishan has some hens and some cows. If the total number of animal heads are 59 and the total number of feet are 190,
(a) A hen has two legs whereas a cow has four legs. But both of them have one head each. Let Kishan have x cows Number of hens = 59 – x. According...
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Gopal has some hens and some goats. If the total number of animal heads are 43 and total number of feet are 142,
(c) Let the number of hens = x Number of goats = 43 – x According to the question, x × 2 + (43 – x) × 4 = 142 or, 2x +...
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Deepak has some hens and some goats. If the total number of animal heads is 90 and the total number of animal feet is 248,
(c) Let total number of goats be x. Then, total number of hens = (90 – x) So, x × 4 + (90 – x) × 2 = 248 4x...
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In rear-wheel drive cars, the engine rotates the rear wheels and the front wheels rotate only because the car moves,
(a) on the rear wheels is in the forward direction (b) on the front wheels is in the backward direction (c) on the rear wheels has a larger magnitude than the Explanation: When accelerating the...
1 Answers 1 views
Ball bearings are used in bicycles, cars, etc., because (a) the actual area of contact between the wheel and axle is increased
(c) Ball bearings are used to reduce friction and friction is directly propertional to effective surface area. So if effective surface area is reduced then friction will also reduce.
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Rohan was the head of planning division of a company manufacturing eco-friendly two wheelers.
(a) (i) Social Environment (ii) Technological Environment (iii) Legal Environment. (b) (i) Concerned for environments menufacturing eco-friendly product. (ii) Concerned for physically challenged people as designing product according to their...
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