Mathematics MCQs
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1661.If y ∝ x² and y = 36 when x = 3, find y when x = 5?
1662.If roots of x² - 5x + 6 = 0 are modified by adding 2 to each root, the new equation is?
1663.Ifx² - 7x + k is factorized into two consecutive integers, find k?
1664.If (a + bi)(a - bi) = 25 and a + b = 7 what is ab?
1665.A person travels 80 km north and 60 km west. How far is he from starting point?
1666.Profit % question (10% less buy, 10% more sell)?
1667.There is 10%, 20% and 40% discount on a thing. What single discount is equivalent to all of them together?
1668.Which number in the series is incorrect? 15, 16, 20, 30, 45, 70
1669.Find the 8th term of the series 1, 3, 9, ...
1670.In a circle, the radius is made twice in length. The area of the circle will be increased by ______?