IBM

Aptitude section:

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1. Time problem - Three persons A,B,C are waiting for Train.A has

to wait for sometime twice the time b has to wait.B has to wait

till 4:48 and c has to wait 4:57. What is the time now?(I'm not

sure abt the question, but the answer is correct).

Ans : is 4.39

2.Problem on probability - What is the probablity of two persons

among the four having birthday in he same month?

A. 75%

B. 50%

C. 33%

Ans : I dont know the answer.

3. A's salary is 25% more than B's salary.How much % is b's salary

on A's salary?

Ans : It's obviously 80%.

4. A problem on Boats and Streams...There is a river. A boy's

house is at the river bank and his school is on the other side of

the river. The distance between house and school is 1/4 miles.The

boy is going to school by swimming at the rate of 2.5mph.The

river's upstream is 2mph.How long will it take him to reach the

school?

Ans : 30min.

5. The diameter of a wheel is 1.26m.If this wheel rotates 500

rotations, how long it can travel?

Ans : 1.98km.

6. If the ratio of speed of a train is 5:4:6 then what is ratio of

the time taken to cover same distance?

Ans : 12:15:10

7. If five buds can make a full cigarette, how many cigarettes can

we make with 121 buds?

Ans : 30

8. The ratio of radii of two cylinders is 2:3 and the ratio of

their heights is 5:3. If the volume of the bigger cylinder is 27,

then what is volume of the smaller one?

Ans : 20

9. If the sum of the digits of a two digit number is 9 less than

the original number, then what is the 10s digit of the number?

Ans : 1

10.

E N D

+ 5 G

---------

G A M E

---------

Here find the value of D?

Ans : 8

11. A squirrel problem

12. Some people are standing square. From them 32 are removed and

then form a small square and then 8 more removed. now we cannot

form the square. so how many people are there at the beginning?

Ans : 81

13. A grandpa's age is sum of his four grandsons provided that the

grandsons' ages are consecutive in number. Then what is the age of

the grandpa?

Ans : 78

14.If 20 men can build a wall 56m long in 6 days, then what length

of a similar wall can be built by 35 men in 3 days?

Ans : 49

15. If m power n = 121, then what is the value of (m-1) power

(n+1)?

Ans : 1000

16. What is the condition for a singular matrix?

Ans : All values of a row are 0 and all values of a column are 0.

Note: For a matrix A, to be singular, The determinant value of

that matrix should be 0,ie, |A|=0

17. At 12 noon, Both hands of a clock meet together.After how many

minutes can they meet again?

Ans : 65:45min

18. The average of first 50 natural numbers?

Ans : 25.5

19. There is 20 litre solution containing 10% water and 90%

spirit. How much water should be added to make the solution

containing 25% water?

Ans : 4 litres.

20. There are 20,6 and 9 rupees notes. you have to form 99 rupees

with minimum number of notes.At what minimum number of notes you

can achieve this?

Ans : 8

Technical:

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1. An attribute in a table that is related with primary key of the

another table is called...

Ans : Foreign key

2. The scope of the static varaible is...

Ans : function

3. Which of the following has the function scope?

A.Automatic

B.Static

C.Global

D.Goto label

E.All the above

Ans : E.All the above

4. Which one of the following is not related with files?

A. fopen

B. fclose

C. freopn

D. fftell

E. none

Ans: D

5. Which one of the following is not a keyword?

A. volatile

B. inc

C. sizeof

D. default

E. none

Ans : B

6. Rom is

Ans : Volatile, cannot be changed and it contains boot up

program.

7. How many different binary trees can be formed by 4 nodes?

Ans : 12 Note:(2 power n) - n

8. char *p = (char *)10 means

A.It points to the value at address 10.

B.It returns the character whose ASCII value is 10.

Ans : A

9. Running time of a function f(n)=8T(n/2)+qn for n>1, where q is

a constant...

Ans : n power 3. (Check the answer)

10. Order of Bubble sort

Ans : O(n power 2)

11. Writing comments

A.Increases .exe file size.

B.Is a good programming practice.

c.Takes more compilation time.

Ans : B.Is a good programming practice.

12. Convert the following decimal number into Hex number...

10767

Ans : 2A0Fh

13. Vector processing means

Ans : Processing the column vector elements parallelly.

14. Constant member function can be loaded with

A. Constant member function.

B. Static member function.

C. Cannot be overloaded.

Ans : C. Cannot be overloaded.

15. By using which of the following functions, we can access the

members of the two instances of a same class

A. Member function.

B. Friend function

C. Both A and B.

D. Neither A nor B.

E. none.

Ans : C. Check the answer

16. Exception specification is in c++ to provide

A. Documentation

B. Object orientedness

C. Error handling

Ans :

17. Which one of the following is a parse generator?

A. YaCC

B. Lex

C. Vi

D. Emac

E. none

Ans : YaCC

18. In a communication model, we can communicate in both

directions, but only one at a time. So the system is called

A. Simplex

B. Half duplex

C. Full duplex

D. none.

Ans : Half duplex.