Year by year CAT aspirants face surprises and going by previous year trends, CAT 2019 might also give you some new surprises hence, a solution to handle toughness of CAT is that you should practice with relevant questions with solution.
Please attempt following question and apply solution for practice:
There are two concentric circles of radii 7 cm and 8 cm. PQ, a diameter of the larger circle, cuts the smaller circle at S and T. A tangent drawn from Q touches the inner circle at R. What is the length of PR (in cm)?
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