Recently Active Algebra Questions

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replied2008-11-03 11:03:16
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replied2008-11-03 10:44:56
• The number of ways in which we can select four numbers from 1 to 30 so as to exclude every selection of four consecutive numbers is???? ...
replied2008-11-03 10:27:28
• How many triangles can be constructed whose largest side is (a) 2p (b) 2p -1 also find the number if 2p =10 .i.ie the lenght of largest side is 10 . i.e. a≤b≤c =10 . ...
replied2008-11-03 09:35:54
• Prove: 1/(n+1) + 1/2(n+1)2 + 1/3(n+1)3 = 1/(n) - 1/2(n)2 + 1/3(n)3 ...
replied2008-11-02 22:46:06
• U have n identical coins... How to divide it into k parts such that each part has a maximum of M and a minimum of N? ...
replied2008-11-02 21:04:05
• Find range of y: y=4{x}3-3{x}-1 ...
replied2008-11-02 09:43:57
• In how many ways can 20 identical balls be distributed among 9 children? i want to make it clear: *all 20 balls may not be distributed *each of them may not get a ball ...
replied2008-11-01 09:42:03
• prove: 1+ 23/2! + 33/3! + 43/4! + + ........... = 5e ...
replied2008-11-01 08:20:40
• In a club election the number of contestants is one more than the max. number of candidates for which voter can vote.If the total number of ways in which a voter can vote be 62,then number of candidates= ...
replied2008-11-01 07:21:26
• The total number of natural numbers of 6 digits that can be made with digits 1,2,3,4 if all digits are to appear in at least once are........ ...
replied2008-11-01 07:06:04
• The number of numbers that can be formed by using the digits 1,2,3,3,3,2,1 so that odd digits always occupy odd palces is ...
replied2008-11-01 07:00:34
• The number and sum of divisors of the number 1800 which are proper and divisible by 6= ...
replied2008-11-01 06:54:58
• If a denotes the number of permutations of (x+2) things taken all at a time,b the number of permutations of x things taken 11 at a time and c the number of permutations of (x-11) things taken all at a time such that a=182 ...
replied2008-11-01 04:49:35
• If mn+1 pairs of letters are written down,each pair consisting of one chosen from the m letters a1,a2,....and the other from letters b1,b2,.....bn , then show that there are at least two pairs identical. ...
replied2008-11-01 04:47:16
• Out of 10 consonants and four vowels , the number of words that can be formed usiong six consonants and three vowels are....... ...
replied2008-11-01 04:45:26
• Find the number of combination of n flowers of which p are identical taken r at a time.Does the answer depend on cases(i)r>p (ii)r<=p ...
replied2008-10-31 23:55:12
• A survey shows that 63% of americans like cheese whereas 76% like apples.If x% like both , find range of x ...
replied2008-10-31 23:49:24
• If 23 people sit around a round table,then prove that the unfavourable chance ratio of two particular pesons sitting together is 10:1 ...
replied2008-10-31 23:43:52
• From a pack of cards two cards are taken out and thrown away. Now a card is drawn at random.Find the probability of the card to be an ace. ...
replied2008-10-31 22:53:04
• what is the least perfect square that when divided by 3 leaves 2 as remainder wen divided by 4 leaves 3 as a remainder and wen divided by 5 leaves 4 ...
replied2008-10-31 08:09:44
• What is the number of matches to be played in a tennis tournament with n players? (assume there is no playoff for losers) i.e. no match for 3rd/4th position. Only the winners keep playing! ...
replied2008-10-30 22:51:23
• if on an average 100 new phone connections are given in a city evey week. The phone numbers of the city are 6 digit long. (of course not starting with 0) How many days will it take for the exchange to exhaust of all numbers! ...
replied2008-10-30 18:26:14
• This question was from the test. I did not understand the solution. Could someone tell me the solution again? 1<sup>2</sup>-2<sup>2</sup>+3<sup>2</sup>-4<sup>2</sup>......... n& ...
replied2008-10-30 18:25:48
• 'A' is a set containing n elements. A subset 'P' of 'A' is chosen. The set 'A' is reconstructed by replacing the elements. A subset 'Q' is again chosen. Now... ...
replied2008-10-30 18:20:40
• show that: (nCo)2 - (nC1)2 + (nC2)2-...(-1)n (nCn)2 =0, n is odd (-1)n/2 (nCn/2) , n is even here, where evr i have multiplied 2 with nC terms..their they are its power...and 'n' is also a power of -1 in the same ...
replied2008-10-30 18:14:09
• My friend gave this question yesterday.... pls tell me ... i have a bet with him! x2=x+x+x+.... n times.... take derivative of both side... 2x=1+1+1+... x times thus, 2x=x! ...
replied2008-10-30 18:04:08
• 2^x= x2+1 i am getting two.... 0 and 1. ny other??? ...
replied2008-10-20 13:18:24
• Find values of a and b for which the eqns have only 1 soln. 2|x|+|x|=y+x2+a x2+y2=1 ...
replied2008-10-19 22:41:37
• ii = ? ...
replied2008-10-16 09:05:32