Recently Active Mathematics Questions

number of natural nos. less than and co prime with 11664 ? ...

Sn=cos1+cos2+cos3+cos4+....+cosn Find \lim_{n\rightarrow \infty}\frac{S_{n}}{n} ...

i dunt know why i am getting wrong answer for so easy question so i will post my answetr and the co0rrect answer also 7 cards are drawn at random from a pack of 52 cards what is probability that 3 red 4 black answer 325 /3915 ...

There are 9 books on the shelves A,B,C. We are searching for the probability of that there are 2 on A, 2 on B. If the books are same, what is the probability? If the books are different, what is the probability? ...

a bag contains 5 white and 9 black balls 3 balls are drawn twice . balls are replaced before the second draw. what is the prob that in the first draw 3 white and in second draw 3 lack balls will be drawn ...

The no. of ways in which n distinct balls can be put into n distinct boxes so that exactly one box remains empty...is??? ...

if x_{n} is a monotonic increasing sequence with x_{1} > 1 i.e, 1< x_{1} < x_{2} < x_{3} < x_{4} <.............< x_{n} < x_{n+1} <.......... then find value of log_{x_{1}} } log_{x_{2}} } log_{x_{3} ...

1/1*1/2 + 1/2*1/22 + 1/3*1/23 ........ find the answer . and show method . ...

If a,b are 2 different positive no. then prove that I) A.m ,G.m ,H.m are in G.p (II) A.m > G.m> H.m Plz... Guide me guys ...

find the amplitude of 1+\frac{\sqrt{3}i }{\sqrt{3}+i} ...

find the last 3 digits of 17to the power 256. ...

1] \int_{-1}^0 \sqrt{\frac{1+x}{1-x}}dx ...

The number of ordered pairs (a,b) such that the equations ax+by=1 and x2 +y2 =50 have all solutions integral ??? ...

*Image* aisa kuch hota hai kya.... [11][12] ...

We all know that all periodic functions can be formed from only trigonometric and inverse trigonometric functions. How can you express {x} and [x] in the above mentioned form? Basically, {x} = some t function and [x] = some o ...

Find the lengths of diagonals of the parallelogram constructed on the vectors p=2a+b and q=a-2b, where a and b are unit vectors and forming an angle of 60°. ...

1. If the vectors a=3i+j-2k, b=-i+3j+4k and c=4i-2j-6k constitute the sides of triangle ABC, then find the length of the median bisecting the the vector c. ...

If the vectors 3p+q;5p-3q and 2p+q;4p-2q are the pairs of mutually perpendicular vectors then find the value of sin(p^q). ...

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\frac{y-1+\left|x-1 \right|}{y-x^{2}+2x}\leq 0 ...

Find the set of values of c for which the angle between the vectors cxi-6j+3k and xi-2j+2cxk is acute for every xξR ...

For n belonging to N, find the value of the definite integral \int_{0}^{n\Pi +V}{\sqrt{(1+cos2x)/2}dx} where \Pi /2<V<\Pi ...

Q If 1,logyx,logzy,-15logxz are in A.Pthen (a)z3=x (b)z3=y-2 (c)z-2=y (d)none of these ...

1)find the value of\sum_{r=1}^{k}{(-3)^{r-1}}}3n_{C}_{2r-1} where k=3n/2 and n is an even positive integer. ...

The square of a 8*8 chessboard are randomly painted either red or black,what is the probability that a randomly chosen 2*2 square contains 2 black and 2 red squares? ...

Let A = \left\{1,2,3 ... 10 \right\} and B = \left\{1,2,3 ... 20 \right\} A function is chosen randomly from A to B,what is the probability that it is non decreasing? ...

\frac{(x-1)^{2}}{x} = -1 and p = \frac{x^{16000}+1}{x^{8000}} , find p ...

if x2 -xcos(A+B)+1 is a factor of the expression 2x4+4x3sinAsinB-x2( cos 2A+cos 2B)+4xcosAcosB-2 Then find the other factor. ...

2 friends would come and stay for 15 minutes.. between 5 to 6 PM. what is the probability that they will meet?????? ...