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SHIFTED TO PERMANENT ADDRESS

2. A shopkeeper sold an article at a profit of 20%. If he had bought it at 20% less & sold it at Rs 80 less, then he earns a profit of 25%. Find the cost price of the article.

a) 350 b) 375 c) 450 d) 400

What is that largest positive integer ' n ' for which n^3 + 100 is divisible by n +10 ?

An isosceles trapezoid has parallel sides of length 15 and 60. A circle is inscribed in the trapezoid, touching all four sides. What is the radius of the circle?

(A) 15 (B) 25 (C) 30 (D) 45