Recently Active Algebra Questions

If a chord is taken at random in a circle, what is chance that its length is more than the radius of the circle? Pls provide method. ...

*Image* ans : i dunno...... ...

7 men and 7 women are sitting around a table so that there is a man on either side of a woman, the number of sitting arrangements is (a) (7!)2 (b) (6!)2 (c) 6!7! (d) 7! ...

*Image* for the 22nd qn If two nos x and y are chosen from the set of all natural numbers the probability that x2+y2 is divisible by 5 must be ...

The series of natural numbers is divided into groups (1),(2,3,4),(5,6,7,8,9)....and so on. Find the sum of the numbers in the nth group. ...

The series of natural numbers is divided into groups (1),(2,3,4),(5,6,7,8,9)....and so on. Find the sum of the numbers in the nth group. ...

x=1+a+a2+a3+...to infinity.(|a|<1) y=1+b+b2+...to infinity.(|b|<1) Prove that 1+ab+a2b2+a3b3+...to infinity=xy/x+y-1 ...

how to find the sum of the series- (1)x2+x4+x6+....+x2n (2)1/x2+1/x4+....1/x2n. Please tell in a proper stepwise manner. ...

consider the A.P's 17,21,25...and 16,21,26.......Find the sum of first 100 common terms appearing in the two series. ...

If x,y,z are in H.P,prove that log(x+z)+log(x+z-2y)=2log(x-z). ...

Find three numbers in G.P such that their sum is 21 and the sum of their squares is 189. ...

Given 2s be the perimeter of a triangle,prove that trangle of greatest area is equilateral. ...

the coefficient of x^59 in the expansion of the product (x-1)(x2-2)(x3-3)................(x^11-11) a)13 b)21 c)7 d)11 ...

1.Two circles are constructed taking two sides of a triangle as diameter. What is the probability that these two circles intersect on third side of triangle? 2.In a MAMCQ test, der r 4 alternatives out of which 1 or more r co ...

*Image* ans pr ps qs s ...

Not a dbt....... nice concept : Find no of non-negatiove integral solution of a + b + c + 4d = 20 wer a,b,c,,d are whole nos. Does ne1 hav diff methd......... i did it by multinomial thrm ...

a,b,c are 3 nos. such that 1 > a,b,c > 0 and a + b + c = 2 Then show that \frac{a}{(1-a)}\frac{b}{(1-b)}\frac{c}{(1-c)} ≥ 8 This may be very simple but I'm getting LHS ≤ 8 instead of ≥ 8 . I'm not able to find my ...

\sum_{k=0}^{n}{f(x + ka)} = 0 is this functn periodic ?? if yes, fid its period ...

two planes 1 and 2 hit a plane in succession . the probability of 1 and2 scoring hit correctly is 0.3 and 0.2 respectively. The second plane will bomb only if 1misses it. probability the target is hited by 2nd one ans-0.32 ...

let Z be a complex no. wil Z2 =/Z/2 (mod Z ) ...

It is given that : If 'n' things are arranged in a row, no. of ways in which they can be deranged so that none of them occupies their original place is n!\left\{1-\frac{1}{1!}+\frac{1}{2!}-\frac{1}{3!}+...+\frac{(-1)^{n}}{n!} ...

find no of inegral solutions of [x][y] = x + y ................ and find the lines on which the non integral soln lie ............. ...

f(x) = log7 log 5 log3 log2 (2x3 + 5x2 - 14x) ...

EK AUR!!! *Image* TRY Q C) I DONT HAV DA ANS............. *Image* ...

SHOW THAT IF n≥6 is composite, then n divides (n-1)! . ...

First term = 1 ,common diff = 4,which of the following represents the general term of the AP A) k^2(k+1)^2 + 3 B) k^2(k-1)^2 - 3 C) k^2(k+1)^2 + 2 D) k^2(k-1)^2 + 5 ...

1. If integers m and n are chosen at random between 1 and 100, then the probability that a number of the form 7m+7n is divisible by 5 is, a.1/4 b.1/7 c.1/8 d.1/49 2. A six faced fair dice is thrown until 1 comes, then probabi ...

*Image* ...

Q] If A,B,C ,D are 4 points in space satisfying AB.CD=k[/AD/2+/BC/2 - /AC/2-/BD/2] {all in vectors} then the value of "k" is a] 2 b] 1/3 c]1/2 d]1 ...

Here are some good complex matrix question..........i have 2 more........ *Image* i have alrady solved them.......but plzzzz try them.....maybe u may have shorter approach ...