If a boat goes upstream at a speed of 21 km/h and comes back the same distance at 28 km/h. What is the average speed (in km/hr) for the total journey?
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If 5 person together can make 5 mats in 5 hrs, then 10 person in 10 hours will make
The simplified form of (4x + 3)2 . (3x - 5) - (4x3 - 12x2 + 9x - 20) is
Find the number that is as much greater than 49 as is less than 95.
If the selling price is Rs 2125 after getting a discount of 15% what was the marked price?
Solve the following equation to find x: (x − 2)2 − 36 = 0 : xεN
If sin P + cosec P = 2, then the value of sin7P + cosec7P is
The area of an equilateral triangle is 9√3 sq cm, find height of the triangle?
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