This is a high quality question. Let image in the test day, the question is: " How many integers between 50 and 1000, inclusive are divisible by either 7 or 9 but not both"
Can you list down all numbers in 2 mins? Of course not, the method of Bunuel is the best way to solve.
Can you list down all numbers in 2 mins? Of course not, the method of Bunuel is the best way to solve.
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