rue?

IMath

ving is

at e A

^)

29

ass - XI

odel-Bt-I

f/ff) 5^i

Arithmetic mean is not affected by extreme items (True/False)

Which of the fallowing is true ?

I eld^i I Ci 1 "[Cl ^i ^p|^f "di^l o i

(i) Mean = 3 Median - 2 Mode (ii) Median = 3 Mode - 2Mea

(iii)Mode = 3 Median - 2 Mean (iv)Mode = Mean + Median

The arithmetic mean of 5, 10, and 15 is

5, 10 cfSTT 1 5 chT 4f<HTd4 ^TTSHT ^ I

(i) 5 (ii)10 (iii) 15 (iv) 3

If A is set of the letters of the word 'eaf then which One of the folio

(i) E € A (ii) A e a (iii) t A (iv)

A collection of well defined objects is called a set (True/False)

The value of [4/5 24 (True/False)

[4 cJ5T ^id 24 ^ 1 (^^H/^ldd)

5p3 is equal to (5p3 cI^IgI^ ^ i)

(i) 25 (ii) 60 (iii) 120 (iv)

Find the G.M. between 8 and 328 3?^^ 3 2 cf> ^frcT c^ui)r1^ ^TTE^T ^TRT c^>)fdU |

10m term of the AP : 2, 5, 8, 11

(i) 47 (ii) 33 (iii) 37 (iv)

CMS<

:100

urs _J

GROUP-A

Questions Carrying 1 mark (s^^cT ^ 3 % i)

UESTION PAPER(Class XII)

athematics

T-TT^T SET -

9.

8.

7.

6.

5.

4.

3.

2.

l.

Q.

Q.

Q.

Q.

Q.

Q.

Q.

Q.

Q.

MODEL Qlcraf -cii^e

Business IV

Full Marks

Time: 3 Ho

[3]

j-A) = 14 ?rerr X = 17 <ft A

If 2 (xrA) = 14 and X = 17, then fi^id the value of 'A'

16.Q.

GROUP -BQuestion Carrying 3 marks

/FalseA technique of estimating of past figure is term as extrapolation (Tr15.

Probability of getting a head in a single tossing of a coin is

IJcf^ f^cfc^ c^ 3U>lcMo^ ^ fclcT (H) 3TT^ cft

(i) - (ii) | (iii) i (iv) 1oo2

14.

Trend analyse refers to long term tendency to

(i) Increasing only(ii) Decrease only

(iii) Either increase or decrease(iv) None of these

13.Q.

(ii) T x S x c x I

(iv) T - S + C -1

% i)YarO = (Y^iTO

(i) T x S x C . I

(iii) T ^ S xCxl

12.

(iv)?5nj^

(iv) None of these

The geometric mean of 4 and 9 is :

(i) 6.5(ii) 9.0(iii) 5.54 cTSTT 9 cJoT ^J^FTtrT^ ^TTE2T ^ :

(i) 6.5(ii) 9.0(iii) 5.5

11

•et)

clot3iTi^<Mid

In the case of unequal size of items

a) ^<GM<HM b)^>GM>HM

c) ^=GM = HM d) None of these

10.Q.

[5]

JC2+1

Differentiate with respect to X23.Q.

find Adjoint A

[5]

12 323 233 4

12 323 233 4

A =

If A =22.Q.

= (a-b) (b-c) (c-a)1 a bei b ca1 c ab

[5]Prove that21.Q.

GROUP - CQuestion Carrying 5 marks

ing orwing a

[3]

From a pack of 52 cards, one card is drawn. What is the chance of dr

ace ?

cTT^T c 5 2 y^ft ^ ^ 17^5 rTcTT t^TI^JI vdldl ^ I

20.Q.

[3]probability that A or B can solve a problem chosen at random.

A cJlfuid clt 75% --l<H^^lnJ ^oT c^^ •^Tc^cTT ^ cteiT B 70% I I

% f^fs A^n B

is theD% Wh;A can solve 75% of the problems in mathematics and B can solve 719.Q.

ity ofprobab

[3]

A bag contains 4 white, 9 black, 6 red and 3 green balls. Find th

getting either a white or a black or a green ball in a single draw ?

4 ^i^^<;, 9 c^lcfl, 6 cTTcT CT2JT 3

~^H TJ^fS cblofl ^TT 17^5

18.Q.

3, 6, 2 4 cTSTT 4 8

Calculate the geometric mean of 3, 6, 24 and 48 without using log t^ble [:

cft

17.Q.

1 98 110

1 9793

1 96 181

1 95166

Estimate the population of 1975(1 975 cft v5T5T^T^^TT c^Year (ensf)1 94

Population (000) 46(ooo)

31.Q.

30-40

2

20-30

7

10-20

3

0-10

1

Size of items(cr^" cJ5T 3

Frequency

2 2

[8]if theIn the following frequency distribution, locate the missing frequenc^arithmetic mean of the series is 22. Also find median.

30.Q.

[8]

Howy hindindi and

In a group of 520 persons 390 can speak hindi and 360 can speak ormany persons can speak English and how many persons can speak h

English.5 2 0 c2TfrF53ff c ^H<^> ^ 3 9 0 f^<^0 ^tc^ t^H^^l ^ cTSTT 3 6

eft febdo^ oilR^ 3i<il^jf] ^tc^ ^Hchcl ^ cT^lTcTloJI

29.Q.

low mai]iy [8]From 7 gentlemen and 4 ladies, a committee of 5 is to be formed. Inways can this be done so as to include at least one one lady ?7 q^tfi 3ft^ 4 <Hf^cU3Tf ^ 5 cft JJ^fS d^^<\\ ddlofl "^

28.Q.

[8]Find the sum of the n terms( n^^^f cj5T

5+55+555

27.Q.

GROUP -DAll Question Carrying 8 marks

[5]

!009169

200890

200771

200692

200583

Year (cnsf)Price (Rs.)

Find the trend of the following value by least square method26.Q.

40-504

30-406

20-3011

10-205

0-10

4Marks ()Number of Students

[5]Calculate harmonic Mean25.Q.

[5]Uax3 + bx2 + cx + d\hc

Find24.Q.