CAT Quantitative Ability Questions | CAT Set Theory questions

CAT/2004

Question . 7

Consider the sets Tn = {n, n + 1, n + 2, n + 3, n + 4}, where n = 1, 2, 3, ............... , 96. How many of these sets contains 6 or any integral multiple thereof (i.e. any one of the numbers 6, 12, 18,............)?

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Method of solving this CAT Quantitative Ability Question from Set Theory question