Mathematics MCQs
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521.The speed of a boat in still water is 2km/hr. If its speed upstream be 1km/hr then speed of the stream is____?
522.The speed of a boat in still water is 60kmph and the speed of the current is 20kmph. Find the speed downstream and upstream?
523.The successive discounts 20% and 15% are equal to a single discount of____?
524.The sum and the product of the roots of the quadratic equation x(power 2) + 20x + 3 = 0 are?
525.The sum of money at compound interest amounts to thrice itself in 3 years. In how many years will it be 9 times itself?
526.The sum of the digits of a two-digit number is 12. The difference of the digits is 6. Find the number?
527.The sum of the length breadth and depth of cuboid is 19cm and it’s diagonal is 5√5 cm it’s surface area is____?
528.The sum of the square of the three consecutive even natural numbers is 1460. Find the numbers?
529.The sum of the squares of two consecutive positive integers exceeds their product by 91. Find the integers?
530.The sum of two numbers is 25 and their differenee is 13. Find their product :