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Recent questions tagged q9

Given the sets ={1,3,5},B={2,4,6} and C={0,2,4,6,8},which of the following may be considered as universal sets(s) for all three sets A,B and C

asked May 26, 2014 by sreemathi.v

1 answer

Find the value of $p$ so that the three lines $3x + y – 2 = 0, px + 2 y – 3 = 0$ and $2x – y – 3 = 0$ may intersect at one point.

asked May 20, 2014 by thanvigandhi_1

1 answer

In an examination of a papers a candidate has to pass in more papers than the number of papers in which he fails in order to be successful.The number of ways in which he can be unsuccessful is

asked May 19, 2014 by sreemathi.v

1 answer

Find the number of permutations of n distinct things taken r together in which 3 particular things must occur together.

asked May 15, 2014 by sreemathi.v

1 answer

It is required to sit 5 men and 4 women in a row so that the woman occupy the even places.How many such arrangemens are possible?

asked May 14, 2014 by sreemathi.v

1 answer

In how many ways can a student choose a programme of 5 courses if 9 courses are available and 2 courses are compulsory for every student.

asked May 14, 2014 by sreemathi.v

1 answer

Find angles between the lines $ \sqrt 3x+y=1$ and $x+\sqrt 3y=1$.

asked May 10, 2014 by thanvigandhi_1

1 answer

Prove the following statement by the principle of mathematical induction : \[\] $n^3-n$ is divisible by 6, for each natural number $n \geq 2$.

asked May 5, 2014 by thanvigandhi_1

0 answers

If $\sqrt{1-x^2}+\sqrt {1-y^2}=a (x-y),$ a being a constant prove that $\large\frac{dy}{dx} =\large\frac{\sqrt {1-y^2}}{\sqrt {1-x^2}}$

asked May 1, 2014 by meena.p

0 answers

Prove the following by using the principle of mathematical induction for all $n \in N$ \[\] $\large\frac{1}{2}$$+ \large\frac{1}{4}$$+\large\frac{1}{8}$$+...+\large\frac{1}{2^n}$$=1-\large\frac{1}{2^n}$

asked Apr 29, 2014 by thanvigandhi_1

1 answer

Prove that $\sin 4A=4\sin A\cos^3A-4\cos A\sin^3A$

asked Apr 18, 2014 by sreemathi.v

1 answer

Find $\sin \large\frac{x}{2},$$\cos \large\frac{x}{2}$ and $\tan \large\frac{x}{2}$ when $\cos x=-\large\frac{1}{3}$.$x$ in quadrant III

asked Apr 18, 2014 by sreemathi.v

1 answer

Find the general solution for the equation $\sin x+\sin 3x+\sin 5x=0$

asked Apr 18, 2014 by sreemathi.v

1 answer

$\cos (\large\frac{3\pi}{2}+$$x)\cos(2\pi+x)[\cot(\large\frac{3\pi}{2}$$-x)+\cot(2\pi+x)]=1$

asked Apr 17, 2014 by sreemathi.v

1 answer

Find the values of the trigonometric function $\sin(-\large\frac{11\pi}{3})$

asked Apr 17, 2014 by sreemathi.v

1 answer

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