Solve your IGNOU Doubts

Question:

If X1, X2, X3, ..., Xn and Y1, Y2, Y3, ..., Yn are the variate values of two variables X and Y, and their geometric means are G1and G2, respectively, then geometric mean of (xj/yi); i = 1, 2, ... n will be (G1/G2).

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Question:

What is the relation of unit on y-axis with unit on x-axis in histogram.

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Question:

Write any 10 principles of data visualisation.

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Question:

Write whether the following data are discrete or continuous. Give reason in support of your answer.

i) Number of children in a family in a colony of 100 families.

ii) Number of pages in each of the 50 books having some mistake.

iii) Height of students of IGNOU who enrolled in 2021.

iv) Waiting time of metro when a person reaches metro station.

v) Monthly income of the family.

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Question:

Write flow charts of Cramer rule and matrix method.

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Question:

Find values of x, y and z given that

5x + y + z = 36
x + y + z = 16

10x+ 2y+ 2z = 72

You are bound to use the matrix techniques to solve the given equations.

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Question:

(ii) $int frac{1}{(x-5)(x^2+4)}dx$

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Question:

Evaluate the following integrals:

(i) $int (10x^9+40x^4+3)sqrt{x^{10}+8x^5+3x+5 dx}$

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Question:

Discuss the continuity and differentiability of the following function at x = 2/3.

$f(x) = left{egin{matrix} egin{vmatrix} x-frac{2}{3} end{vmatrix} & x eq frac{2}{3} \ 0 & x=2/3 end{matrix}ight.$

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Question:

If in a hall there are 10 randomly selected students then how many numbers of ways arethere such that all of them have different birthday. Assume that all of them have their birth day in non-leap years.

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Question:

How many different signals are possible with 5 blue, 4 red, 3 white and 2 green flags byusing all at a time in a queue?Express 700.1400.2100.2800.3500.42000 in terms of factorial.

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Question:

Express 700.1400.2100.2800.3500.42000 in terms of factorial.

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Question:

How many words each of three vowels and two consonants can be formed from the letters of the words INVOLUTE?

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Question:

Set having values $frac{1}{4},frac{1}{9},frac{1}{16},frac{1}{25},frac{1}{36},frac{1}{49},...$ is countable.

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Question:

A carpenter was hired to build 192 window frames. The first day he made five frames and each day thereafter he made two more frames than he made the day before. How many days he will take to finish his job?

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Question:

State whether the following statements are True or False. Give reason in support of your answer:

(a) Between any two different rational numbers there is another rational number.

(b) $int_{-1000}^{1000} (x^{1000} + x^{2001}+x^{3001})dx =0$

(d) $egin{vmatrix} a & x & b+c\ b &x &c+a \ C & x & a+b end{vmatrix} = 0$

(e) The range of the data shown in the following frequency distribution is 350.

Classes	200- 250	250- 300	300- 350	350- 400	400- 450	450- 500	500- 550
Frequencie	0	0	0	0	0	0	0

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Question:

Collect information from your nearest

a.fish market and

b.meat shop

on the various marine/inland fish and chicken available . Also note the name, weight and cost per kg of different types of fish and chicken available.

Name	Weight	Cost per kg

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Question:

Visit an Anganwadi functioning under ICDS programme in your neighbourhood. Write the names and service provided to the beneficiary in that centre. Compare the services and the beneficiaries you have recorded in the centre to the ones mentioned in your reading material.

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Question:

Visit your local market and list down 10 items of food. Each foods selected ( eg Arhar dal, sugar etc) should be available both in the packed and loose form. Write the food standard mark on the packed food. Record their price per unit(per kg/ per gm) and your observations regarding the price and quality of items.