Recent questions tagged class9

The value of $2 \sqrt[3]{40} + 3 \sqrt [3] {625} -4 \sqrt [3]{320}$ is

asked Feb 2, 2015 by meena.p

1 answer

If $ \sqrt {5^n} =125$ , then $5 \sqrt [n]{64}$=

asked Feb 2, 2015 by meena.p

1 answer

If $\large\frac{2^{m+n}}{2^{n-m}}$$=16$ and $a =2^{\large\frac{1}{10}}$, then $\large\frac{a^{2m+n-p}}{(a^{m-2n+2p})^{-1}}$=

asked Feb 2, 2015 by meena.p

1 answer

If $g=t^{\large\frac{2}{3}}+4t^{\large\frac{-1}{2}}$, the value of g when $t=64$ is ______

asked Feb 2, 2015 by meena.p

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$(x^{-1}+y^{-1})^{-1}$ is

asked Feb 2, 2015 by meena.p

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The value of $x-y^{x-y}$ when $x=2$ and $y=-2$

asked Jan 30, 2015 by meena.p

1 answer

If $4^x-4^{x-1} =24$, then $(2x)^x$ is ______

asked Jan 30, 2015 by meena.p

1 answer

For any positive real number x, the value of $ \{ (x^a)^b \} ^{\large\frac{1}{ab} } \{ (x^b)^c \} ^{\large\frac{1}{bc}}\{(x^c)^a\}^{\large\frac{1}{ac}}$ is

asked Jan 30, 2015 by meena.p

1 answer

The value of $ \large\frac{(0.6)^0-(0.1)^{-1})^{-1}}{(3/8)^{-1}(3/2)^3+(1/3)^{-1}}$

asked Jan 30, 2015 by meena.p

1 answer

The value of $\large\frac{2^n +2^{n-1}}{2^{n+1}-2^n}$=

asked Jan 30, 2015 by meena.p

1 answer

The value of x if $2^{x-7} \times 5^{x-4} =1250$ is _______

asked Jan 30, 2015 by meena.p

1 answer

$\bigg( \large\frac{x^{-4} }{y^{-10}}\bigg)^{\large\frac{5}{4}}$=_____

asked Jan 30, 2015 by meena.p

1 answer

If $27^x =\large\frac{9}{3^x}$, the value of x is ________

asked Jan 30, 2015 by meena.p

1 answer

The value of x if $5^{x-3} .3^{2x-8}=225$

asked Jan 30, 2015 by meena.p

1 answer

The value of $\Large\frac{(x^{a+b})^2(x^{b+c})^2(x^{c+a})^2}{(x^ax^bx^c)^4}$=

asked Jan 30, 2015 by meena.p

1 answer

$\sqrt[3] {xy^2} \div x^2 y $ =_______

asked Jan 30, 2015 by meena.p

1 answer

$\large\sqrt[4]{\sqrt[3] {x^2}}$=

asked Jan 30, 2015 by meena.p

1 answer

$(\sqrt 4)^{-7} (\sqrt 2 )^{-5}$ is

asked Jan 30, 2015 by meena.p

0 answers

The value of $(25)^{\large\frac{-1}{3} } \times 3 \sqrt {16}$ is _______

asked Jan 30, 2015 by meena.p

1 answer

The value of $2^{55} \times 2^{60} -2^{97} \times 2^{18}$is ________

asked Jan 30, 2015 by meena.p

2 answers

If $a=2$ and $b=3$ , then the value of $\bigg( \large\frac{1}{a} +\frac{1}{b}\bigg)^a $=_____

asked Jan 30, 2015 by meena.p

1 answer

Which of the following is irrational ?

asked Jan 30, 2015 by meena.p

1 answer

Which of the following is irrational ?

asked Jan 29, 2015 by meena.p

0 answers

The number $1. \bar {27}$ in the form $\large\frac{p}{q}$, where P and q are integer and $q \neq 0$ , is

asked Jan 29, 2015 by meena.p

1 answer

The smallest rational number by which $\large\frac{1}{3}$ should be multiplied so that its decimal expansion terminates after one place of decimal is

asked Jan 29, 2015 by meena.p

1 answer

$23.\bar{45}$ when expressed in the form $\large\frac{p}{q}$ is ___________

asked Jan 29, 2015 by meena.p

1 answer

The value of $0.\overline{24} +0.\overline{21}$ is _________

asked Jan 29, 2015 by meena.p

1 answer

If $x=1 - \sqrt 2$, then the value of $\bigg(x- \large\frac{1}{x}\bigg)^3$ is

asked Jan 29, 2015 by meena.p

1 answer

If $x = \large\frac{1}{2 - \sqrt 3 }$, then the value of $x^3-2x^2-7x+5$ is

asked Jan 29, 2015 by meena.p

1 answer

If $x= 2 +\sqrt 3 $, then $x^2+\large\frac{1}{x^2}$ is ______

asked Jan 29, 2015 by meena.p

1 answer

The value of $ \sqrt [3] 4 \times \sqrt [3]16 $ is ________

asked Jan 29, 2015 by meena.p

1 answer

If A,B,C are three points on a circle with center O Such that $\angle AOB =90^{\circ}$ and $\angle BOC =120^{\circ}$ then $\angle ABC$ =_________

asked Jan 6, 2015 by meena.p

1 answer

Two circles with centers A and B of radii 3 cm and 4 cm respectively intersect at two points C and D such that AC and BC are tangents to the two circles. The length of the common chord CD is _________

asked Jan 6, 2015 by meena.p

1 answer

Two triangles ABC and DEF are similar to each other in which AB = 10 cm and DE=8 cm.The ratio of the areas of $\Delta ABC$ and $\Delta DEF$ is _____

asked Jan 5, 2015 by sreemathi.v

1 answer

If E is a point on side CA of an equilateral $\Delta ABC$ such that $ BE \perp AC$, then $ AB^2 + BC^2 + CA^2 = K BE^2 $. Then the value of K is

asked Jan 5, 2015 by sreemathi.v

1 answer

ABCD is a rectangle in which BC=2AB.A point E lies on ray CD such that CE = 2BC.Then BE _____ AC.

asked Jan 5, 2015 by sreemathi.v

1 answer

ABCD is a parallelogram.AB is divided at P and CD at Q so that AP : PB = 3 : 2 and CQ : QD= 4 : 1.If PQ meets AC at R,then AR =____ AC.

asked Jan 5, 2015 by sreemathi.v

1 answer

In a $\Delta ABC$,AD is a median .X is a point on AD such that AX : XD = 2 : 3.Ray BX intersects AC in Y.Then BX=______ XY.

asked Jan 5, 2015 by sreemathi.v

1 answer

A point D is on the side BC of an equilateral triangle ABC such that $DC=\large\frac{1}{4}$$BC$.Then $AD^2$=____$CD^2$

asked Jan 5, 2015 by sreemathi.v

1 answer