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Recent questions in Class 9
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Olympiad-Math
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Class 9
Class 9
Logical Reasoning
Number Systems
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Statistics and Probability
Logical and Analytical Reasoning
Everyday Mathematics
The simplified value of $4 \sqrt {12} - \sqrt {50} - 7 \sqrt {48}$ is ________
olympiad
math
ch-1
realnumber
class9
asked
Feb 2, 2015
by
meena.p
1
answer
Arrange in decreasing order of magnitude $\sqrt[4]{10},\sqrt [6]{6},\sqrt[8] {90}$
olympiad
math
ch-1
realnumber
class9
asked
Feb 2, 2015
by
meena.p
1
answer
Arrange in decreasing order of magnitude $\sqrt[3]{4},\sqrt [4]{6},\sqrt[8] {90}$
olympiad
math
ch-1
realnumber
class9
asked
Feb 2, 2015
by
meena.p
1
answer
If $ a = \large\frac{2 - \sqrt 5}{2+\sqrt 5},$$b = \large\frac{2+\sqrt 5}{2- \sqrt 5}$ then $a^2 -b^2 =$
olympiad
math
ch-1
realnumber
class9
asked
Feb 2, 2015
by
meena.p
1
answer
The simplest rationalizing factor of $ \sqrt [3] {500}$ is
olympiad
math
ch-1
realnumber
class9
asked
Feb 2, 2015
by
meena.p
1
answer
If $ \large\frac{\sqrt 3 -1}{\sqrt 3 +1}$$=a - b \sqrt 3$, then
olympiad
math
ch-1
realnumber
class9
asked
Feb 2, 2015
by
meena.p
1
answer
If $ x= 7+4 \sqrt 3 $, and $xy =1$ then $ \large\frac{1}{x^2}+\frac{1}{y^2}$=______
olympiad
math
ch-1
realnumber
class9
asked
Feb 2, 2015
by
meena.p
1
answer
If $x= \sqrt [3] {2+\sqrt 3}$, then $x^3 +\large\frac{1}{x^3}$=_____
olympiad
math
ch-1
realnumber
class9
asked
Feb 2, 2015
by
meena.p
1
answer
If $ x = \large\frac{2}{3 +\sqrt{7}}$, then $(x-3)^2$=________
olympiad
math
ch-1
realnumber
class9
asked
Feb 2, 2015
by
meena.p
1
answer
The ratiocination factor of $\sqrt 3$ is
olympiad
math
ch-1
realnumber
class9
asked
Feb 2, 2015
by
meena.p
1
answer
$\large\frac{1}{3- \sqrt 8 } -\frac{1}{\sqrt 8 - \sqrt 7 }-\frac{1}{\sqrt 6 - \sqrt 5}+\frac{1}{\sqrt 5 -2}$=_________
olympiad
math
ch-1
realnumber
class9
asked
Feb 2, 2015
by
meena.p
1
answer
If $x =3-2 \sqrt 2 $ then $x^2+\large\frac{1}{x^2}$
olympiad
math
ch-1
realnumber
class9
asked
Feb 2, 2015
by
meena.p
1
answer
If $x= \large\frac{\sqrt 2 +1}{\sqrt 2 -1}$$y= \large\frac{\sqrt 2 -1}{\sqrt 2 +1}$ then $x^2+xy+y^2 $ is _______
olympiad
math
ch-1
realnumber
class9
asked
Feb 2, 2015
by
meena.p
1
answer
The value of $\large\frac{1}{1+\sqrt 2 }+\frac{1}{\sqrt 2 +\sqrt 3 }+ \frac{1}{\sqrt 3 + \sqrt 4 }.....\large\frac{1}{\sqrt{8}+\sqrt 9}$=
olympiad
math
ch-1
realnumber
class9
asked
Feb 2, 2015
by
meena.p
1
answer
$\sqrt {\sqrt {729} \div \sqrt {27}}$ is _________
olympiad
math
ch-1
realnumber
class9
asked
Feb 2, 2015
by
meena.p
1
answer
$\sqrt[3]{2} \times \sqrt [5] {3} \times \sqrt [15]{32}$ is ________
olympiad
math
ch-1
realnumber
class9
asked
Feb 2, 2015
by
meena.p
1
answer
The value of $2 \sqrt[3]{40} + 3 \sqrt [3] {625} -4 \sqrt [3]{320}$ is
olympiad
math
ch-1
realnumber
class9
asked
Feb 2, 2015
by
meena.p
1
answer
If $ \sqrt {5^n} =125$ , then $5 \sqrt [n]{64}$=
olympiad
math
ch-1
realnumber
class9
asked
Feb 2, 2015
by
meena.p
1
answer
If $\large\frac{2^{m+n}}{2^{n-m}}$$=16$ and $a =2^{\large\frac{1}{10}}$, then $\large\frac{a^{2m+n-p}}{(a^{m-2n+2p})^{-1}}$=
olympiad
math
ch-1
realnumber
class9
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 ______
olympiad
math
ch-1
realnumber
class9
asked
Feb 2, 2015
by
meena.p
1
answer
$(x^{-1}+y^{-1})^{-1}$ is
olympiad
math
ch-1
realnumber
class9
asked
Feb 2, 2015
by
meena.p
1
answer
The value of $x-y^{x-y}$ when $x=2$ and $y=-2$
olympiad
math
ch-1
realnumber
class9
asked
Jan 30, 2015
by
meena.p
1
answer
If $4^x-4^{x-1} =24$, then $(2x)^x$ is ______
olympiad
math
ch-1
realnumber
class9
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
olympiad
math
ch-1
realnumber
class9
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}}$
olympiad
math
ch-1
realnumber
class9
asked
Jan 30, 2015
by
meena.p
1
answer
The value of $\large\frac{2^n +2^{n-1}}{2^{n+1}-2^n}$=
olympiad
math
ch-1
realnumber
class9
asked
Jan 30, 2015
by
meena.p
1
answer
The value of x if $2^{x-7} \times 5^{x-4} =1250$ is _______
olympiad
math
ch-1
realnumber
class9
asked
Jan 30, 2015
by
meena.p
1
answer
$\bigg( \large\frac{x^{-4} }{y^{-10}}\bigg)^{\large\frac{5}{4}}$=_____
olympiad
math
ch-1
realnumber
class9
asked
Jan 30, 2015
by
meena.p
1
answer
If $27^x =\large\frac{9}{3^x}$, the value of x is ________
olympiad
math
ch-1
realnumber
class9
asked
Jan 30, 2015
by
meena.p
1
answer
The value of x if $5^{x-3} .3^{2x-8}=225$
olympiad
math
ch-1
realnumber
class9
asked
Jan 30, 2015
by
meena.p
1
answer
The value of $\Large\frac{(x^{a+b})^2(x^{b+c})^2(x^{c+a})^2}{(x^ax^bx^c)^4}$=
olympiad
math
ch-1
realnumber
class9
asked
Jan 30, 2015
by
meena.p
1
answer
$\sqrt[3] {xy^2} \div x^2 y $ =_______
olympiad
math
ch-1
realnumber
class9
asked
Jan 30, 2015
by
meena.p
1
answer
$\large\sqrt[4]{\sqrt[3] {x^2}}$=
olympiad
math
ch-1
realnumber
class9
asked
Jan 30, 2015
by
meena.p
1
answer
$(\sqrt 4)^{-7} (\sqrt 2 )^{-5}$ is
olympiad
math
ch-1
realnumber
class9
asked
Jan 30, 2015
by
meena.p
0
answers
The value of $(25)^{\large\frac{-1}{3} } \times 3 \sqrt {16}$ is _______
olympiad
math
ch-1
realnumber
class9
asked
Jan 30, 2015
by
meena.p
1
answer
The value of $2^{55} \times 2^{60} -2^{97} \times 2^{18}$is ________
olympiad
math
ch-1
realnumber
class9
asked
Jan 30, 2015
by
meena.p
2
answers
Which of the following is irrational ?
olympiad
math
ch-1
realnumber
class9
asked
Jan 30, 2015
by
meena.p
1
answer
Which of the following is irrational ?
olympiad
math
ch-1
realnumber
class9
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
olympiad
math
ch-1
realnumber
class9
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
olympiad
math
ch-1
realnumber
class9
asked
Jan 29, 2015
by
meena.p
1
answer
$23.\bar{45}$ when expressed in the form $\large\frac{p}{q}$ is ___________
olympiad
math
ch-1
realnumber
class9
asked
Jan 29, 2015
by
meena.p
1
answer
The value of $0.\overline{24} +0.\overline{21}$ is _________
olympiad
math
ch-1
realnumber
class9
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
olympiad
math
ch-1
realnumber
class9
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
olympiad
math
ch-1
realnumber
class9
asked
Jan 29, 2015
by
meena.p
1
answer
If $x= 2 +\sqrt 3 $, then $x^2+\large\frac{1}{x^2}$ is ______
olympiad
math
ch-1
realnumber
class9
asked
Jan 29, 2015
by
meena.p
1
answer
The value of $ \sqrt [3] 4 \times \sqrt [3]16 $ is ________
olympiad
math
ch-1
real number
class9
asked
Jan 29, 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 _____
olympiad
math
ch-7
triangles-circles-and-constructions
class9
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
olympiad
math
ch-7
triangles-circles-and-constructions
class9
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.
olympiad
math
ch-7
triangles-circles-and-constructions
class9
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.
olympiad
math
ch-7
triangles-circles-and-constructions
class9
asked
Jan 5, 2015
by
sreemathi.v
1
answer
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