Search the Community

[ATTACH=CONFIG]7169[/ATTACH] Master GRE Quantitative Comparison with easy strategies! Tuesday, January 9th 7pm ET / 4pm PST / 12am GMT Complete Mastery of GRE Quantitative Comparison

I realized I accidentally made this thread on the introduction forum instead of Math GRE forum (Multiple tabs open) . can someone tell me how to move it. Hi Everyone, My name is jaymit. I am new to this forum. I came across this question while solving the Manhattan series books. Its a quantitative comparison question. Q) A farmer sells vegetables to 180 different customers. 90 of them purchase zucchini and 115 of them purchase cauliflower. A. Number of customer who purchased both zucchini and cauliflower. B. Number of customer who purchased neither zucchini nor cauliflower. my solution : Total = 180 customers customers who took zucchini (includes A ∩ B) + customer who took cauliflower (includes A ∩ B)= 90 + 150 = 205 customers But total customers is 180 and A∩ B is added twice in above calculation : 205 - 180 = 25 i.e A ∩ B I was stuck here. Question : can we assume that number of customers who purchase neither zucchini nor cauliflower is 0 ? I am confused because the problem doesn't mention if all customers purchase at least one of zucchini or cauliflower. But when you add all the value as shown below, you get 180 customers. i.e 65(Only zucchini) + 125(Only cauliflower) + 25(both) = 180 customers ​ PS : I know how to solve it algebraically. I'd like to know if I am thinking the right way. Ans is A.