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1. In an isolated system , the total momentum remains ____________.
2. In a row of 63 cars, black car is 32nd from the right end. What is its position from left end?
3. Two circles touch each other internally. The radius of the larger circle is 6 cm and the distance between the centre is 2 cm, then the radius (in cms) of the other circle is
4. Out of 240 candies, 30% of the candies were given to Rahul and the remaining to Ashok. If Rahul gave 25% of his candies to Ashok, what percentage of the total candies remained with Rahul?
5. A library has an average of 510 visitors on Sundays and 240 on other days. The average number of visitors per day in a month of 30 days beginning with a Sunday is:
6. The method generally adopted to increase the durability of precast concrete piles and pipes carrying sewage is called as
7. In the following questions, some numbers are given at the left side and some are on the right side too. If numbers of both sides are same, then answer would be ‘Y’ (Yes) and if numbers are different then answer will be ‘N’ (No).A. 747 B. 747
8. If the BOD (Bio-Chemical Oxygen Demand) of water is zero then water is ____________.
9. If the elevation of the Sun changes from 30° to 60°, then the difference between the lengths of shadows of a pole 15 m high, is
10. If \({\rm{A}} = \frac{1}{{1 \times 2}} + \frac{1}{{1 \times 4}} + \frac{1}{{2 \times 3}} + \frac{1}{{4 \times 7}} + \frac{1}{{3 \times 4}} + \frac{1}{{7 \times 10}} \ldots \) upto 20 terms, what is the value of A?
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