Recently Active Algebra Questions

Ppl, plz put up all the summation series questions that u know..(along with answers) 1.I'm starting with: 1+2ω+3ω2..............nωn-1 ans. (n/ω-1) ...

ΣΣ(r+s)(Cr+Cs+CrCs) 0≤i<j≤n ...

number of positive integral solutions of x1x2x3x4x5=1050 give method tooo ...

WAT CONDITIONS DO V HAV TO IMPLY ON 2TAN(Î x) in the fol. functn ?? ( Q11) *Image* ...

In a test ai students gave wrong answers to at least i questions where i=1,2,..........k.No student gave more than k wrong answers.THen total no. of wrong answers is given is???? ...

1) The value of 50C6 - 5C1.40C6 + 5C2.30C6 - 5C3.20C6 + 5C4.10C6 is 2) The minimum value of (8x^{2}+y^{2}+z^{2})(\frac{1}{x}+\frac{1}{y}+\frac{1}{z})^{2} is 3) In a ΔABC, tanB/tanC = 2/3 and tanA.tanB.tanC=6 then the value(s ...

can any1 explain cauchy schwarz inequality saf saf?i wikied but i cudnt get anything.... ...

no. of ways of arranging 3 boys and 3 girls on a round table such that only 2 and any 2 girls sit together ...

if a+b = (x+iy)1/3 then prove that 4(a2-b2)=x/a+y/b ...

If ‘head’ means one and ‘tail’ means two , then coefficient of quadratic equation ax2 + bx + c = 0 are chosen by tossing three fair coins. Then find the probability that roots of the equations are imaginary. jaldi pos ...

Here i will be posting ques on probability which could prove to be useful 4 every1 Do try to give explanations if u can options will be given on demand[1] Q1 If the papers of 4 students can be checked by any one of 7 teachers ...

If a,b,c and u,v,w are 2complex nos. represeting teh vertices of 2 triangles such that c=(1-r)a+rb and w=(1-r)u+rv where r is a complex no. then what is relation between 2 triangles. ...

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3m+3n = 5r r ε N ......... find no. of ways of choosin m,n ε[1,100] ...

3 tangents are drawn at random to a circle .the odds against the circle being inscribed in triangle formedby them is ________ ...

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if n positive terms are multiplied together the probabilities that the last digit are *Image* ...

The....question is...the letters in vice chancellor are to be arranged so tht no two vowels r together...i wanted to ask can we fix alll consonants..and permute the vowels..... ...

the least positive value of "n" for which (1+w2)n = (1+w4)n, where w is a non real cube root of unity is .......... ? ...

x^log9x>9 implies ...

Find the number of eight digit numbers in which the fifth digit is numerically greatest and the numbers to the left and right of it are in decreasing order (not strictly decreasing)... (repetition allowed)... ...

Statement 1: If A and B are two matrices such that AB = A, then B is a square matrix and Statement 2: The product AB exists only if A is of order m × n and B is of order n × n. 1. Statement 1 is True, statement 2 is True; s ...

sum of numbers of using digits 1 2 3 4 and also find the same for 2 0 3 1 and 2 2 0 1 i actually wanna know the concept how we proceed ..... ...

find the no of ways...in which 18 identical balls can be used in 15 different cricket matches ...

An urn A contains 3 white and 5 red balls and another one B has 5 white and 3 red balls.2 balls are transferred from A to B and then 1 is drawn from B.What is the probability that it is red? easy one but i 've a small doubt ...

dere r 3 main political parties namely 1,2,3 if adjoining table pij [i,j=1,2,3] denote d probability dat party j wins d general elections contestedwhen party i is in d power after d next 2 elections , given dat d party 1 is i ...

a letter is known to have come frmeither frm london or frm clifton . on d post mark only d 2 consecutive lrtters ON r legible wat is d chance dat it came frm london? ...

how many non prime factors are in the no..2^5 X 3^7 X 9^2 X 11^4 X13^3 todah easy hain ...

prove that 1*2* nCr-- 2*3* nCr-2 + 3*4*nCr-2-.............+(-1)r(r+1)(r+2) = 2* n-3Cr ...

Statement 1: If z1 and z2 are two complex numbers such that their product is a real number, then they are conjugate to each other and Statement 2: (x + iy) (x - iy) = x2 + y2, x, y R. 1. Statement 1 is True, statement 2 is Tr ...