A car covers the first 30 km at a speed of 60 kmph and the next 20 km at 80 kmph. Find the average speed.
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A right circular solid cylinder has radius of base 7 cm and height is 28 cm. It is melted to form a cuboid such that the ratio of its side is 2 : 3 : 6. What is the total surface area (in cm2) cuboid?
If tanθ + cotθ = 5, then the value of tan2θ + cot2θ is
The surface area of a sphere is 1386 cm2. Find its diameter (in cm)
The least number, which when divided by 5, 6, 7 and 8 leaves a remainder 3 in each case, but when divided by 9 leaves no remainder, is:
Which of the following quadratic equations has real roots?
In the following question, select the related number from the given alternatives. 695 : 659 : : 839 : ?
The slopes of two lines are 1 and √3. What is the angle between these two lines?
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