Deshaw From IITG

This is deshaw from iitg.

section1)quantitative 20 min 20 bits.after 20 min you
should return paper.

section2)programming java,... 20 bits

section3)A puzzle


"""i am sending questions only""".You should prepapre
answers.
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section1)  :quantative
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5)a brick is 4kg.If you make the brick 1/4 then how
much will be its weight.
7)ans is "c"mohan 8km behind ravi"mohan speed
6km/hr,ravi speed 4km.hr when will mohan cross ravi.
8)a man on motorcycle is going inthe direction of
bulltet(gun).A man fires two bullets with time gap
"""25min""".But the man on motor cycle listens second
shot after 27 min.then find sound velocity:motorcycle
velocity.

9)k-7 is divisible by 11   and k+3n is divisible by 11
.find minium n answer is (a).that means n=5.

10)5red ball,7 white ball in one bin,3red ,12 white in
another bin.If one ball picked what is prob of it is
red.answer is 37/120

14)1-(0.1)*0.2=0.98 is the answer.

15)0.1% in one meter answer is (a)

16)ans c

19)4,12,15,5,2,---  fill that gap.

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section 2
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1)"soap" means/*i think ans is a*/

2)char *(*(*a[n])())(); means ans:a is an array [n] of
pointers to function returning pointer to functiuon
whose return type is char pointer

3)what will be in ""/etc"" answer is c(password files)

4)api used to hide window

5)ntfs means /*new technoly file system*/

6)a bit on unix properties answer is all of the above.

7)i=7;i++*i++ answer is 49(check)

8)p[]="d e shaw"

he made p++.so it is surely """compile time error.""""
9)char *(*(* var)())[10] means var is a pointer to a
function returning pointer to an array[10] of pointers
10)
if we pass n=10 to the following function,how many
times it will print ""done""
f(int n)
for(i=1;i<=n;i++)
f(n-i);
print("done");

i think answer is none of the above.

12)

i=0,j=1
printf("%d", max(i++,j++) )
printf("%d%d",i,j);

you got this type question in so many papers.

14)asked about properties of "structure","class"
ans is a
17)what is property of ""final class"" in java
ans is can't inherit further.


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section 3:in this section you have only one question
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Write any three numbers in a row.It is always possible
to find a subset of adjucent numbers that add up to a
multiple of 3(that is either one,two or three numbers
that are next to each other).

for example (1):          5,7,1    5+7=12(multiple of
3)

example 2:                4,4,15   15 is multiple of 3

example 3:                5,11,2   5+11+2=18 is
multiple of 3

can you explain why and prove it ?what happens if you
write a long list of numbers(say ""n"" numbers).Is it
always possible to find a subset of adjacent numbers
that add up to a multiple of ""n"".Can you explain why
and prove ????