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Mathematics MCQs
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511.The radius of a wire is decreased to one βthird if volume remains the same length will increase
512.The radius of the base of cone is 3 cm and height is 4 cm. Find the volume of the cone?
513.The roots of the equation 3x2 β 12x + 10 = 0 are?
514.The salary of a worker is first increased by 30% and afterwards reduced by 30%.
515.The sale price sarees listed for Rs.400 after successive discount is 10% and 5% is____?
516.The sector of a circle has radius of 21 cm and central angle 135o. Find its perimeter?
517.The side of a square is increased by 25% then how much % does its area increases?
518.The simple interest on Rs.500 at 6% per annum from May 3rd to July 15th in the same year is____?
519.The slant height of a cone is 12 cm and radius of the base is 4cm, find the curved surface of the cone.
520.The smallest fraction, which each of 6/7, 5/14, 10/21 will divide exactly is____?