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Maths Puzzle
If principal is doubled, profit is tripled, find the profit percentage
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self Other Question
If α and β are the zeros of the quadratic polynomial f(x) =ax2 +bx+c, then evaluate: a* (α ^2 / β^2) + b*( α / β + β^3 / α )
if y=|x-2|+|2.5-x|+|3.6-x|, then y is minimum at
(a)x=2.3
(b)x=2.5
(C)x=2.7
(d)none of these