PAPER 15

1.Difference between 123 and O123 in c language
2.The command used to count the number of lines in
UNIX:


3.The commands lke cat,date are stored in___________
directory:
a)/dev,
b)/temp,
c)/prog


4.The attribute of one table is used as the key
address of another table.thsi kind of address is
called
a)foreign address
b)primary address
c)secondary address


5.A container contains pure milk.if 20% is replaced by
water and then the same processs is repeated twicw
then what will b the % of milk remaining?


6.A can fill a tank in 6 hours and B can fill the
tank in 4 hours.if both the pipes are opened
alternatively for an hour with A as the first then in
how many hours will the tank b filled?

7.In 50 coins 1 is defective(more weight).in how many
weighs can u find the defective coin?

8.In a km race A beats B by 28metres or 7 sec.find
A’s time over the course?

9.A frog can climb a distance of 12m and then falls
back by 5m. in how much time will it climb a well of
63m?

10.If a square piece is cut into 27 parts in 6 cuts
and is coated with cake in all its outer surfaces than
find the number of pices without cake?

11.the number of multiplications done in square matrix
of order n?

12.If 1st jan is a Sunday then find the number of
Sundays in that year?

13.If there r 20 black and 20 white socks,then find
the number of chances which will help to collect three
pair of socks?

14.There r 180 coins totally comprising of 10p and 25p
coins.contributing to 36.90 rs.
Find the number of 10p coins?

15.there r three persons A,B,C.out of which one says
always the truth.other 2 always speaks false.each one
makes a statement?
1.i am not A
2.I am not B.
3.I am C.

find who speaks the truth?(…..a,b,c are replced by
some names…)

16.int c
while(c!=getchar()!=#)
putchar();
} if the input is ABCD# ,what will b the output?

17.Inline function is used for:

18.comment:

{
float a,b,c;
if(b*b-4*a*c)=0.0printf(“the roots r equal”);
}

19.
int x=14,y=10,z=3;
x*=y+1+z;
printf(“%d”,x);
}what is the value of x

20.40% of the people read newspaper A,50% B,10% both
A&B.
how many % doesnot read any of the both?

21.relation between class and structure…(something
like public ,private..)

22.which operator cannot be overloaded? ?:

23.which of the given statements is true ‘bt
overloading?

24.If a flight ticket is to b bookedand attributes
like flight number, ticket
number,destination,arrival,sat numer r given.which of
the above is the primary key?

25) If one man do a job of two boys. If 12 men’s and
15 boys can do a work in 25 days working 7.5 hrs a
day. How many boys are required along with 21 men’s to
complete a work twice the first one in 50 days.


26) If 200m and 150m long trains moving in the same
direction at a speed of 40kmph and 45kmph, what is the
time taken by the trains to cross each other.

27. If the radius of the circle is decreased by 50%
then the area will be reduced by what percentage. Ans
25%

28) If average age of a five member group is same as
three years ago. When a old man is replaced by a young
man. What is the diff. between their ages.


29) 3 step of a ladder is immersed in water .if
thickness of the steps is 1.5” and distance between
the steps is 8” .the tide raise at the rate of 16” per
hour for first 6 hrs and then it ebbs at the rate of
8” per hour .after 8 hrs how many steps will be
immersed in water