Help

[geetha418@yahoo.co.in]

Dear frnds,i hv rcvd a call for test from TCS.Its gonna b held
on 7th oct.Well i am preparing well for the exam.I hv seen
mostly questions are repeated but with different numerical values.So
i am trying to grasp the methodolgy rather than mugging up the
questions.But i am facing problem in some questions.I am unable to
solve the following questions.

Can anybody of u please let me know the methodolgy of solving the
following questions.
It will b great help for me.

Questions are as follows:

1)Which of the following highest Standard deviation
7, - 7, 7,-7, 7,-7 b) 7, 7, 7,7,7,7 c) -7, - 7, -7,-7,-7,-7 d) -7,
7, -7, 7,-7, 7 Ans: d)

Which of the following set of numbers has the highest Standard
deviation?
5,0,5,0,5,0
-5,-5,-5,-5,-5,-5.
5,0,5,0,5,0
-5,5,-5,5,-5,5

2) What is the largest Prime Number that can be stored in 8-bit
memory?
Ans:251

3) in a two dimensional array X(9,7) which each element occupying 4
bytes of memory with address of the first element X(1,1) is 3000,
find the address of X(8,5).
Ans: 3212

4) In madras, temperature at noon varies according to -t^2/2 + 8t +
3, where t is elapsed time. Find how much tem more or less in 4 pm
to 9 pm.
Ans: At 9pm 7.5 more

5) The size of the bucket is N kb. The bucket fills at the rate of
0.1 kb per millisecond. A programmer sends a program to receiver.
There it waits for 10 milliseconds / and response will be back to
programmer in 20 millisecond. How many much time the program takes
to get a response back to programmer, after it is sent?
Ans: 30 millisecond

6) Which of the following do not form triangle? a)5,5,5 b) 3,4,7, c)
3,5,9 d) 81,8,5
Ans: c) options are not right

7) Which of the following are orthogonal pairs a) 3i+2j b) i+j c) 2i-
3j d) 7i+j
Ans: a) + c)

8) If A, B, C are the mechanisms used separately to reduce the
wastage of fuel by 30%, 20%, 10%. What will be the fuel economy if
they were used combine?
Ans: 49.6

9) If the vertex (5,7) is placed in the memory. First vertex (1,1) s
address is 1245 and then address of (5,7) is ----------
Ans: 1279

10) My flight takes of at 2am from a place at 18N 10E and landed 10
Hrs later at a place with coordinates 36N70W. What is the local time
when my plane landed?
Ans: 6.40 am

11) WHICH SHAPE WILL BE OBTAINED BY USING THESE VALUES OF X ,Y
X Y
0 0.00001
10 1.02
100 1.72
1000 3.00
9999 4.72
Ans: Y= log10(X)

12)What is the power of 2? a. 2068 b.2048 c.2668 ANS: (B). 2048

13) A power unit is there by the bank of the river of 900 meters
width. A cable is made from power unit to Power a plant opposite to
that of the river and 3000mts away from the power unit. The cost of
the cable below water is Rs. 5/- per meter and cost of cable on the
bank is Rs.2/- per meter. Find the length where the cable is to be
cut. ANS: 2100m



PLEASE REPLY ME ASAP as it will help me to try out more questions on
the same pattern.

my id:geetha418@yahoo.co.in

[psksenthilkumar]

hey geetha its very difficult
i tried but couldnt solve