University of Mumbai 2007 B.A Economics Computer Systems and Applications - Question Paper

MODEM is a software.
RAM is non - volatile memory.
Every computer requires an Operating system.
AOL is a commercial on line service.
Hard disk can be write protected.
Bulletin Board Service is not part of Internet.

(b) What is the output of the subsequent C program? four
main()
{ char x='A';
float y=112233.55;
printf("%-3c%+6.2f\n",x,y);
printf("%4c%-8.0f\n",x,y);j

(c) Write a C program to input name and taxable income(tin), and then print name, taxable income and income tax(it) where tax schedule is as follows: four
Taxable Income(tin Income Tax(it)
First 50,000 Nil
Next 50,000 10%
Next 1,00,000 20%
Excess 30%

Q.5 (a) discuss briefly about following:- six

(i)ALU (ii)UNIX (iii) Search Engines
(b) Write a C program to obtain and print the sum of: four
22 x 3+ 42 x 7+6 two x 11+ . . . +202 x 39
(c) Write a Program in C to input 10 pairs of x and y and then compute and print Karl Pearson's correlation coefficient using the subsequent the subsequent formula:

Q.5 (a) discuss briefly about following: six

(b) Write a Program in C to obtain and print the sum of. one two three 2x3x4 5............................212022 four

(c) Write a C program to input 10 pairs of x and y print regression coefficients byx and bxy using the formula provided below: six

PART — B
Q.1 (a) ans the subsequent in 1 sentence: three

(i)What is the function of control unit of CPU?
(ii) provide 2 examples of Operating System.
(iii) provide full form of ISP.
(b) ans the subsequent in MS-EXCEL:

(i) discuss the use of the subsequent functions. two
(i) AND( ) (ii) LEN( )
(ii) What is the use of paste special choice in Edit menu? two
(iii) What is the use of Auto fill handle? one
(c) State whether the subsequent are actual or False: three
(i)In Windows 95, once a folder is created you can not alter its name.
(ii) In MS-WORD, obtain and change choice appears in Tools menu.

Earning:   Approval pending.