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Re: Brain Teasers#313. There are ten delegates representing five companies, equally. In how many ways can a group of four be selected and arranged such that there is not more than one representative belonging to the same company? Character is who you are when no one is looking. #402 20090220 07:40:35
Re: Brain TeasersLast edited by JaneFairfax (20090220 08:39:25) #403 20090220 08:30:46#404 20090221 00:04:34
Re: Brain TeasersAnswers to #313, #315, and #318: Character is who you are when no one is looking. #405 20090221 00:36:07
Re: Brain Teasers#319. A person went to a bank with exactly $1019, all in $1 bills. He gave the money to the cashier and said 'Put this money into a minimum number of bags in such a way that if I call and ask you for any integral number of Dollars up to #1019, you would be able to give me the exact amount by handing over one or more bags, without having to open any of the bags." What is the minimum number of bags required for the purpose? Last edited by ganesh (20090221 19:45:52) Character is who you are when no one is looking. #406 20090221 01:24:32
Re: Brain Teasers#321. A, B, and C together earn $7600 and spend 70%, 75%, and 80% of their salaries respectively. If their savings are in the ratio 4:5:6 respectively, what is the salary of B? Character is who you are when no one is looking. #407 20090221 13:39:42
Re: Brain Teasers
#408 20090221 13:42:03#409 20090221 19:45:24#410 20090221 19:55:32
Re: Brain TeasersAnswers to #322, and #323: Character is who you are when no one is looking. #411 20090221 22:33:31#412 20090221 23:29:38
Re: Brain TeasersAnswer to #320: Character is who you are when no one is looking. #413 20090222 22:04:01
Re: Brain Teasers#328. In a group of 500 students, there are 475 who can speak English and 200 who can speak French. What is the number of students who can speak English only if every student can speak one or both of these languages ? Character is who you are when no one is looking. #414 20090223 18:40:42
Re: Brain Teasers#330. If the numbers given below are in binary system, what is the value of #331. There are fourchairs with two chairs in each row. In how many ways can four persons be seated on the chairs, so that no chair remains unoccupied? #332. In how many ways can the letters of the word CORPORATION be arranged so that the vowels always occupy even places? #333. If all the permutations of the letters of the word 'LAGAN' are arranged as in a dictionary, then what is the rank of 'NAAGL'? #334. Given and , then what is equal to? #335. Under what condition is the tangent to a given curve at a point perpendicular to the xaxis? #336. In a Geometric progression with first term a and common ratio r, what is the Arithmetic Mean of the first five terms? #337. What is the following product equal to? ? #338. What is the value of x if ? Character is who you are when no one is looking. #415 20090227 20:08:32
Re: Brain Teasers#339. How many terms would the expansion of the following contain? Character is who you are when no one is looking. #416 20090303 00:58:54
Re: Brain Teasers#340. What is the last digit before the three zeros in 19! ? Character is who you are when no one is looking. #417 20090303 01:17:53
Re: Brain Teasers#342. What is the sum of the series Character is who you are when no one is looking. #418 20090303 03:28:17
Re: Brain TeasersMy Attempts... If two or more thoughts intersect with each other, then there has to be a point. #419 20090303 16:09:14
Re: Brain TeasersAnswers to #326, #327, #328, #329, #330, #331, #332, #334, #335, #337, #338, #339, #340, and #341: Character is who you are when no one is looking. #420 20090303 16:19:21
Re: Brain Teasers#343. A uniform circular coin required too much metal relative to its value. Hence, it was decided to reduce the diameter of the coin by 10% and the thickness by 15%. Approximately, by how much percentage would the weight of the coin reduce if everything else about the coin remains unchanged? Character is who you are when no one is looking. #421 20090303 23:03:33
Re: Brain Teasers
Last edited by JaneFairfax (20090303 23:05:48) #422 20090304 01:04:03
Re: Brain TeasersAnswer to #346: Character is who you are when no one is looking. #423 20090304 01:19:47
Re: Brain Teasers#347. If the area of the triangle ADE is 5 square units, and BD = 2 DE = 5 EC, what is the area of the triangle ABC? Character is who you are when no one is looking. #424 20090304 02:16:27
Re: Brain Teasers#348. Two regular polygons have number of sides in the ratio 4:5 and the measure of interior angles in the ratio 25:26 respectively. How many sides does the regular polygon with lesser number of sides have? Character is who you are when no one is looking. #425 20090304 19:12:30
Re: Brain Teasers#349. Which of the following numbers can possibly be the perfect square of a three digit odd number (some of the digits of the numbers have been hidden and replaed by 'x')? Character is who you are when no one is looking. 