gunestopcu
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The question says" different rectengular formations" t:8-s:30, t:10-s:24, t:12-s:20, t:16-s:15, t:20-s:12, t:24-s:10, t:30-s:8 I think the answer is 4 bec. t:8-s:30 and t:30-s:8 have the same formations as well as t:12-s:20, t:20-s:12 and t:10-s:24 t:24-s:10.
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2 sides are equal but which 2 sides? Although areas are equal, it does not mean that corresponding sides are equal, so it can not be determined. Ans is E.
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4 is also one of these numbers, isn't it? 4-6-8-9-10-12-14-15-16-18 Am I correct?????
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The formula is ABC (UNION)= A + B + C - AB - AC - BC + ABC = 70 + 65 + 65 - 45 - 35 - 40 + 35 = 115 125 - 115 = 10 speak none of the languages.
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If we subtract the outcome which couples sit together from the all possible outcomes and divide it to the total of all possible outcomes then we will reach the answer. 3.2.1.2.2/5.4.3.2.1 = 1/5
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3. 16*10^-7 means 0,0000016 and "any decimal that has only a finite number of nonzero digits is a terminating decimal. for example, 24, 0.82, and 5.096 are three terminating numbers." according to this info the answer is 7
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Where to study permutation and combinations?
gunestopcu replied to Aspirant's topic in GMAT Problem Solving
so much to do