LDC • Paper-II
C-DAC was established in the year:
A)
1989
B)
1987
C)
1975
D)
1988
C-DAC was established in 1988.
LDC • Paper-II
Simplify the expression (81)1/2 - 4 and choose the correct answer.
A)
3
B)
5
C)
6
D)
7
√81 − 4 = 9 − 4 = 5.
LDC • Paper-II
In a figure sequence, the arrow rotates 45° clockwise in each step. If the current arrow points right (→), in which direction will the next arrow point?
A)
Up
B)
Down
C)
Down-right
D)
Left
45° cw from East (→) points to South-East, i.e., Down-right.
LDC • Paper-II
Which was first virus detected on ARPANET, the forerunner of the internet in the early 1970s?
A)
Exe Flie
B)
Creeper Virus
C)
Peeper Virus
D)
Trozen horse
Creeper was the first experimental self-replicating program on ARPANET.
LDC • Paper-II
If a number is divided by 6, the quotient is 15 and the remainder is 4. What is the number?
A)
90
B)
94
C)
96
D)
100
Dividend = divisor × quotient + remainder = 6×15 + 4 = 94.
LDC • Paper-II
A piece of paper is folded thrice successively in the same direction. If one hole is punched, how many holes will appear when the paper is fully unfolded?
A)
6
B)
12
C)
8
D)
16
Each fold doubles layers: 2^3=8 layers, one punch gives 8 holes when unfolded.
LDC • Paper-II
A can do a work in 50 days and B can do it in 75 days. If they work together for 10 days and then stop, what fraction of the work is completed?
A)
1/4
B)
1/3
C)
2/5
D)
3/5
Combined daily rate = 1/50+1/75=1/30; in 10 days they complete 1/3.
LDC • Paper-II
Which one of the following words is different from the others as the rest represent means of transport?
A)
Bus
B)
Train
C)
Bicycle
D)
Elevator
Bus, Train, Bicycle are horizontal transport vehicles; Elevator is vertical lift, not a conventional means of transport.
LDC • Paper-II
In a certain number series, 2, 6, 12, 20, 30, ?, the missing number is:
A)
36
B)
40
C)
42
D)
48
Pattern n(n+1): 1*2=2,2*3=6,3*4=12,4*5=20,5*6=30,6*7=42.
LDC • Paper-II
CAD stands for:
A)
Computer Aided Design
B)
Calculation Aided Design
C)
Computer Aided Draft
D)
Calculation Aided Draft
CAD means Computer-Aided Design.
LDC • Paper-II
The first graphical user interface was designed in the 1970s by:
A)
IBM
B)
Xerox Corporation
C)
Microsoft
D)
Intel
Xerox developed the influential early graphical user interface at Xerox PARC.
LDC • Paper-II
In a family of six members A, B, C, D, E, and F, A is the father of B and C, D is the mother of B and C, E is the sister of A, and F is the son of E. How is F related to B?
A)
Brother
B)
Nephew
C)
Cousin
D)
Uncle
F is the son of B's paternal aunt, so F is B's cousin.
LDC • Paper-II
The average of 9 observations is 20. If one observation is excluded, the average becomes 18. What is the excluded observation?
A)
28
B)
32
C)
36
D)
40
Original total = 180; remaining total = 8×18=144; excluded value = 36.
LDC • Paper-II
A shopkeeper allows a discount of 12% on the marked price of a table and sells it for 1,320. What is the marked price of the table?
A)
1,500
B)
1,400
C)
1,600
D)
1,650
Selling price is 88% of marked price, so 1320/0.88 = 1500.
LDC • Paper-II
The base of a triangle is 20 cm and its height is 12 cm. What is the area of the triangle?
A)
100 sq cm
B)
120 sq cm
C)
144 sq cm
D)
240 sq cm
Area = 1/2 × 20 × 12 = 120 sq cm.
LDC • Paper-II
Which key is used to increase left indent?
A)
Ctrl+I
B)
Ctrl+M
C)
Alt+I
D)
F10
In common word-processing shortcuts, Ctrl+M increases/increases the paragraph indent.
LDC • Paper-II
Each box in a spreadsheet is called?
A)
empty space
B)
cell
C)
field
D)
record
Each spreadsheet cell is the intersection of a row and a column.
LDC • Paper-II
Superscript, subscript, outline, emboss, engrave are known as:
A)
Font styles
B)
Font effects
C)
Word Art
D)
Text Effects
These are text/font effects applied to characters.
LDC • Paper-II
The clock rate of CPU is measured in which unit?
A)
Milliseconds
B)
Microhertz
C)
Nanoseconds
D)
MHz or GHz
CPU clock frequency is expressed in MHz or GHz.
LDC • Paper-II
The average of the first 20 natural numbers is:
A)
9.5
B)
10
C)
10.5
D)
11
The average of 1 through 20 is (1+20)/2 = 10.5.
LDC • Paper-II
Observe the given numbers and identify the number in which the product of its digits is zero.
A)
245
B)
731
C)
804
D)
612
Product of digits zero requires a zero digit; 804 has 0 => 8*0*4=0.
LDC • Paper-II
If A is the brother of B, C is the father of A, and D is the sister of C, how is D related to B?
A)
Mother
B)
Niece
C)
Aunt
D)
Sister
C is father of A and B. D is sister of C, hence paternal aunt of A and B.
LDC • Paper-II
If “FUTURE” is coded as “6-21-20-21-18-5”, how will “PAST” be coded using the same alphabetical position pattern?
A)
16-1-20-21
B)
16-1-19-20
C)
15-1-19-20
D)
16-1-18-20
Alphabetical positions: F=6 etc. P=16, A=1, S=19, T=20 => 16-1-19-20.
LDC • Paper-II
A man is facing South. He turns 90° clockwise, then 180° anticlockwise, and finally 90° clockwise again; in which direction is he facing now?
A)
North
B)
East
C)
South
D)
West
Start South (180°). +90° cw = West (270°), -180° ccw = East (90°), +90° cw = South (180°). Ends facing South.
LDC • Paper-II
Observe the given number series carefully where each number is formed by multiplying the previous number by 2 and then subtracting 1. Find the missing number: 2, 3, 5, 9, 17, ?
A)
31
B)
33
C)
34
D)
35
Rule *2-1: 2->3->5->9->17-> 17*2-1=33.
