Paper: Mathematics Class:9th Name: Section:
Date: Total Marks: 25 Obtained Marks:
Q.1 Tick the correct answer.
i)Which decimal is terminating
a)201.07 b)0.4 c) a and b d) 0.222.......
ii) 3 is a number
a)irrational b)rational c)equal d)none
iii)If a=b then b=a, for all a, belongs to R is called
a)reflexive b)symmetric c)transitive d)additive
iv)a-1 is written as
a)1/a2 b)1/a-1 c)1/a-2 d)1/a
v)The conjugate of z=-5 is
a)5 b)-5 c)-5+0i d) b and c
Q.2 Attempt any six questions.
i)Find value of x and y if x+iy+1=4-3i ii)Express 2i2+6i3+3i16-6i19+4i25 in form of a+ib
iii)Simplify (9-7i)/(3+i) iv)If Z(1+i)/(1-i)then find Z.Z
v)Simplify〖[x3y4z5]〗^(1/5)/〖[x-2y-1z-5]〗^(1/5) vi)Simplify(x3)2 ÷x3
vii)Solve [a2t/al+m] [a2m/am+n] [a2n/an+l]
viii)If Z=2+3i and W=5-4i then prove that Z+W=Z+W
Q.3 Attempt any two questions.
a)Use laws of exponents to simplify (81)n 35 - (3)4n-1 (243)/(92n)(33)
b)Simpify (2-3i)(3-2i) in the form of a+ib
c)Simlify (2)1/3 (27)1/3 (60)1/2 /(180)1/2 (4)-1/3 (9)1/4
Date: Total Marks: 25 Obtained Marks:
Q.1 Tick the correct answer.
i)Which decimal is terminating
a)201.07 b)0.4 c) a and b d) 0.222.......
ii) 3 is a number
a)irrational b)rational c)equal d)none
iii)If a=b then b=a, for all a, belongs to R is called
a)reflexive b)symmetric c)transitive d)additive
iv)a-1 is written as
a)1/a2 b)1/a-1 c)1/a-2 d)1/a
v)The conjugate of z=-5 is
a)5 b)-5 c)-5+0i d) b and c
Q.2 Attempt any six questions.
i)Find value of x and y if x+iy+1=4-3i ii)Express 2i2+6i3+3i16-6i19+4i25 in form of a+ib
iii)Simplify (9-7i)/(3+i) iv)If Z(1+i)/(1-i)then find Z.Z
v)Simplify〖[x3y4z5]〗^(1/5)/〖[x-2y-1z-5]〗^(1/5) vi)Simplify(x3)2 ÷x3
vii)Solve [a2t/al+m] [a2m/am+n] [a2n/an+l]
viii)If Z=2+3i and W=5-4i then prove that Z+W=Z+W
Q.3 Attempt any two questions.
a)Use laws of exponents to simplify (81)n 35 - (3)4n-1 (243)/(92n)(33)
b)Simpify (2-3i)(3-2i) in the form of a+ib
c)Simlify (2)1/3 (27)1/3 (60)1/2 /(180)1/2 (4)-1/3 (9)1/4
