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1. Samant bought a microwave oven and paid 10% less than the original price. He sold it with 30% profit on the price he had paid. What percentage of profit did Samant earn on the original price?

17%

20%

27%

32%

None of these

2. The sum of n terms of the series, where n is an even number:

1^{2} +2^{2} + 3^{2}+ 4^{2} + 5^{2} + 6^{2} + …. :

n (n + 1)

n(n-1 )/2

n(n+1 )/2

Data inadequate

3. If x × y = x + y + then the value of 6 × 24 is

41

42

43

44

4. A person has to cover a distance of 6 km in 45 minutes. If he covers one-half of the distance in two-thirds of the total time; to cover the remaining distance in the remaining time, his speed (in Km/hr) must be

6

8

12

15

5. A can finish a work in 18 days and B can do the same work in 15 days. B worked for 10 days and left the job. In how many days, A alone can finish the remaining work?

5

5x1/2