The simple interest on a sum of money for 10 years is Rs 3130. If the principal becomes 5 times after 5 years, then what will be the total interest (in Rs) obtained after 10 years?
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If $ \dfrac{11-13x}{x}+\dfrac{11-13y}{y}+\dfrac{11-13z}{z}=5 $, then what is the value of $\dfrac{1}{x}+\dfrac{1}{y}+\dfrac{1}{z}=?$ |
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If 2x + (9/x) = 9, then what is the minimum value of x2 + (1/x2)? |
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If (5x – y)/(5x + y) = 3/7, then what is the value of (4x2 + y2 – 4xy)/(9x2 + 16y2 + 24xy)? |
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If (x + y)2 = xy + 1 and x3 – y3 = 1, then what is the value of x – y? |
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In the given figure, PQRS is a square and SRT is an equilateral triangle.When is the value (in degrees) of $\angle$SOR ? |
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ABCD is a parallelogram in which AB = 7 cm, BC = 9 cm and AC = 8 cm. What is the length (in cm) of other diagonal? |
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How many diagonals are there in octagon? |
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A square is inscribed in a quarter circle in such a way that two of its adjacent vertices on the radius are equidistant from the centre and other two vertices lie on the circumference. If the side of square is √(5/2) cm, then what is the radius (in cm) of the circle? |
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If sec2 θ + tan2 θ = 5/3, then what is the value of tan 2θ? |
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A tower is broken at a point P above the ground. The top of the tower makes an angle 60° with the ground at Q. From another point R on the opposite side of Q angle of elevation of point P is 30°. If QR = 180 m, then what is the total height (in metres) of the tower? |
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