JEE ADVANCED 2023 Paper 2 Permutations and Combinations

Answer to the question - A Consider the 6 × 6 square in the figure. Let A1, A2,…., A49 be the points of intersections (dots in the picture) in some order. We say that Ai and Aj are friends if they are adjacent along a row or along a column. Assume that each point Ai has an equal chance of being chosen. (2) Two distinct points are chosen randomly out of the points A1, A2, ……., A49. Let p be the probability that they are friends. Then the value of 7p is _____.
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