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MATHEMATICS / xf.krClassIX / &IX
Time allowed: 3 hours Maximum Marks: 90fu/kkfjr le; 3 ?k.V vf/kdre vd 90General Instructions:
(i) All questions are compulsory.(ii) The question paper consists of 34 questions divided into four sections A,B,C and D. Section
A comprises of 8 questions of 1 mark each, section B comprises of 6 questions of 2 marks
each, section C comprises of 10 questions of 3 marks each and section D comprises 10
questions of 4 marks each.
(iii) Question numbers 1 to 8 in section-A are multiple choice questions where you are to selectone correct option out of the given four.
(iv) There is no overall choice. However, internal choice have been provided in 1 question oftwo marks, 3 questions of three marks each and 2 questions of four marks each. You have
to attempt only one of the alternatives in all such questions.
(v) Use of calculator is not permitted.lkekU; funk
(i) lHkh izu vfuok;ZgSaA(ii) bl izu i= esa34 izu gSa,ftUgsapkj [k.Mksav,c,l rFkk n esackaVk x;k gSA [k.M & v esa8 izu gSaftuesa
izR;sd 1 vad dk gS,[k.M & c esa6 izu gSa ftuesaizR;sd ds 2 vad gSa,[k.M & l esa10 izu gSa ftuesaizR;sd ds3 vad gS rFkk [k.M & n esa10 izu gSaftuesaizR;sd ds4 vad gSaA
(iii) [k.M v esaizu la[;k 1 ls8rd cgqfodYih; izu gSatgkavkidks pkj fodYiksaesals ,d lgh fodYi pquukgSA
(iv) bl izu i= esadksbZ Hkh loksZifj fodYi ugha gS,ysfdu vkarfjd fodYi 2 vadksads,d izu esa,3 vadksads3izuksaesavkSj 4 vadksads2 izuksaesafn, x, gSaA izR;sd izu esa,d fodYi dk p;u djsaA(v) dSydqysVj dk iz;ksx oftZr gSA
Section-A
Question numbers 1 to 8 carry one mark each. For each question, four
alternative choices have been provided of which only one is correct. You have
to select the correct choice.
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1.A rational number equivalent to a rational number
7
19is :
(A)17
119 (B)
14
57 (C)
21
38 (D)
21
57
7
19
(A)17
119 (B)
14
57 (C)
21
38 (D)
21
57
2.Zeroes of the polynomial x24x21 are :
(A) 3 and 7 (B) 3 and 7 (C) 3 and 7 (D) 3 and 7
x24x21
(A) 3 7 (B) 3 7 (C) 3 7 (D) 3 7
3.The value of p for which (x2) is a factor of polynomial x4x32x2px4 is :
(A) 10 (B) 9 (C) 4 (D) 10
(x2) x4x32x2px4 p
(A) 10 (B) 9 (C) 4 (D) 10
4. If the polynomial x3x2x1 is divided by x1, then the quotient is :
(A) x21 (B) x21 (C) x2x1 (D) x2x1
x3x2x1 x1
(A) x21 (B) x21 (C) x2x1 (D) x2x1
5.The things which coincide with one another are :
(A) equal to another (B) unequal
(C) double of same thing (D) Triple of same things
(A) (B)
(C) (D)
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6. In ABC, A100, B30and C50then
(A) AB > AC (B) AB < AC
(C) BC < AC (D) none of these
ABC A100, B30 C50
(A) AB > AC (B) AB < AC
(C) BC < AC (D)
7. The perimeter of an equilateral triangle is 60 m then its area is :
(A) 10 3 m2 (B) 15 3 m2
(C) 203
m2
(D) 1003
m2
60
(A) 10 3 2 (B) 15 3 2
(C) 20 3 2 (D) 100 3 2
8.Area of a triangle having base 6 cm and altitude 8 cm is :
(A) 48 cm2 (B) 24 cm2 (C) 64 cm2 (D) 36 cm2
6 8
(A) 48 2 (B) 24 2 (C) 64 2 (D) 36 2
Section-B
Question numbers 9 to 14 carry two marks each.
9. Represent 2 by a point on the real line ?
2
10. If x2 is a factor of ax22x4a9 find a.
ax22x4a9 x2 a
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11. Find the remainder when p (x)x36x22x4 is divided by q (x)12x
p (x)x36x22x4 q (x)12x
12. In figure, it is given that 14 and 32. By which Euclids axiom, it can be shown
that if
2
4 and
1
3.
14 32
24 13.
13. In the figure below, AXBY and AXBY prove that APX BPY.
AXBY AXBY APX BPY.
OR
In the given figure, ABC is a triangle in which altitudes BE and CF to sides AC and AB
respectively are equal. Show that ABE ACF.
ABC AC AB BE CF
ABE ACF
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14. Plot the points P (1, 1), Q (2, 3) and R (8, 11). Show that they are collinear.
P (1, 1), Q (2, 3) R (8, 11)
Section-C
Question numbers 15 to 24 carry three marks each.
15.
If3 2
3 2
p
and3 2
3 2
q
, find p2q2.
3 2
3 2p
3 2
3 2q
p2q2
OR
Simplify : .
.
16.
Represent on the number line.
17. Factorize : (pq)3(qr)3(rp)3
(pq)3(qr)3(rp)3
OR
13 41 1
3 35 8 27
13 4
1 13 35 8 27
17
17
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Find the value of k for which (x1) is factor of p(x)(kx23xk)
k (x1) p(x)(kx23xk)
18. Find the value of x3y315xy125 when xy5.
x3
y3
15xy125 xy5.
19. In the given figure, ABCD. Find the value of x.
ABCD. x
ORIn the figure given below, ABCDEF and ABC 60 , CEF 140 , find the value of BCE .
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ABCDEF, ABC 60 , CEF 140 BCE
20. In the figure given below, if ABCD, then find
.
ABCD,
21. ABC and DBC are two isosceles triangles on the same base BC. Show that ABDACD.
ABC DBC BC ABDACD.
FAE 90 and AFE 40 ECD
FAE 90 and AFE 40 ECD
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22.
In figure, ABAD, ACAE and BAD EAC. Prove that BCDE
ABAD, ACAE BAD EAC . BCDE
23. In the given Figure, ABCD and CDEF. Also, EAAB. If BEF55, find the values ofx,
yand z.
ABCD CDEF EAAB BEF55 x,y z
24.The sides of a triangle are in the ratio of 12 : 17 : 25 and its perimeter is 540 cm.
Find its area.
12 : 17 : 25 540 cm
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Section-D
Question numbers 25 to 34 carry four marks each.
25.
Prove that :
1 1 1 1 1
3 7 7 5 5 3 3 1
1 1 1 1 1
3 7 7 5 5 3 3 1
OR
Show that :
26. If x is a positive real number and exponents are rational numbers, simplify :
b c a c a b (a b c)b c ac a b
x x x
x x x
x
b c a c a b (a b c)b c a
c a b
x x x
x x x
27. If the polynomial (2x3
ax2
3x5) and (x3
x2
2xa) leave the same remainder whendivided by (x2), find the value of a. Also, find the remainder in each case.
(2x3ax23x5) (x3x22xa) (x2)
a
28.Factorize : 2x2
5
6x
1
12
2x25
6x
1
12
1 1 1 1 1 5
3 8 8 7 7 6 6 5 5 2
1 1 1 1 1 5
3 8 8 7 7 6 6 5 5 2
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29. If the polynomialsf(x) px34x23x4 and g (x)x34xp are divided by (x3), then the
remainder in each case is the same. Find the value of p.
f(x) px34x23x4 g (x)x34xp x3
p
OR
If 2x3y12 and xy6 find the value of 8x327y3.
2x3y12 xy6 8x327y3
30. (a) Plot the following points in the coordinate plane
A (4, 4) B (6, 0) C (4, 4) D (2, 0)
(b) Name the figure formed by joining the points A, B, C and D and also find its area.
(a)
A (4, 4) B (6, 0) C (4, 4) D (2, 0)
(b) A, B, C, D
31. In the given figurelm , show that 1 2 3180
lm , 1 2 3180
32.In the figure below, PQQR and x y. Prove that ARPB.
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PQQR x y ARPB.
33. In right ABC in given figure, right angled at C, M is the midpoint
of hypotenuse AB, C is joined to M and produced to a point D such
that DMCM. Point D is joined to point B. Show that
(i) AMC BMD (ii) DBC is a right angle
ABC C M
AB C M D
DMCM D B
(i) AMC BMD
(ii) DBC
34.In an isosceles triangle ABC with ABAC the bisector of B and C intersect
each other at O. Join A to O. Show that :
(i) OBOC (ii) AO bisects A
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ABC ABAC B C O A
O
(i) OBOC (ii) AO, A
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