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JEE Main Mathematics question

MathematicsPermutations and CombinationsJEE Main

Consider the following statements: 1. There are points in a plane of which only are collinear, then the number of straight lines obtained by joining these points in pairs is . 2. . 3. Three letters can be posted in five letter boxes in ways. Which of the statements given above is/are correct?

Answer: (D)

Solution

Statement 1: the collinear points give only one line, not , so the count is ; the printed expression is false. Statement 2: , which differs from the

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Question ID VK-020667