Find the greatest number of 4-digit which is exactly divisible by 15.

The greatest no. of 4 digit = 9999 When we divide 9999 by 15, the remainder is 9. ∴ 9999 - 9 = 9990

- Uttarakhand Government accomplished a Golden Triangular Project. Under this Project, the State Government Laid down 6 lane roads connecting the three cities Dehradun, Haridwar and Rishikesh which are equally separated from each other i.e., in terms of the Geometry they form an equilateral triangle. Ram and Shyam start simultaneously from Dehradun and Haridwar respectively, towards Rishikesh. When Ram covers 20km, Shyam covers such a distance that the distance between Ram and Shyam makes 90°angle with the road joining Haridwar and Rishikesh. When Shyam reaches Rishikesh, Ram is still 30 km away from Rishikesh. Find the distance between Dehradun and Haridwar?
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^{2}= ………74, how many possible values for N? - Find the maximum number of trees which can be planted, 25 meters apart, on the two sides of a straight road 2125 meters long?
- Two positive numbers differ by 1280. When the greater number is divided by the smaller number, the quotient is 7 and the remainder is 50. The greater number is:

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