HR INTERVIEW QUESTION CLOCK PUZZLES

 

1. I found an unusual thing happening to my watch. I noticed that at every 65 minutes the hour and the minute hand come together. Can any anyone tell me that was my watch gaining or losing time and by how much ?

Asked In HR Interview

ANS:

In normal watch, the hour and the minute hand come together after every 65 5/11 mins but same position is achieved in your watch after 65 mins.
so watch is gaining time.

2. How many buckets of water can be there in Indian ocean ?

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ANS:

Depends on size of Bucket

3. There are two apartments in a village in which the people from one apartment(Say Aprmnt 1) speak only truth where as the people from second apartment speak only lies(Say Aprtmnt 2) Now the question is you want to go to the apartment in which people speak only truth. You have a chance to ask only one question to any person in apartment and decide which is the correct apartment. What is the question you are going to ask to know which is the correct apartment.? (Condition: Only One Question Is To Be Asked)

Asked In HR Interview

ANS:

Which is your apartment?

Person who lives in apartment 1 will show you apartment 1 as they always speaks the truth.
Person who lives in apartment 2 will show you apartment 1 as the always speaks lies.
So all of them will always show you the apartment in which people speak only truth.

4. How to divide a cake in 8 sectors using three cuts?

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ANS:

Just cut the cake once to make a 2 halfs... [1st cut]

Now place 1 half of d cake on the other half...
Now do a horizantal cut [2nd cut] which ll give 4 pieces [below half produce 2 nd above half produce 2]
nd then do a vertical cut [3rd cut] which ll give 8 pieces [below half produce 4 nd above half produce 4]

5. What are the negatives in your college ?

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ANS:

The faculty of my college is so good that my interest towards the studies increasing day by day and I will give so much time to my study and can't give time to my family .

[This is tricky question at any case u should not reveal any negetives of your college.. Because hr thinks if i selects him definetly he will talk bad of our company outside :)]

6. There is a mute person who wants to buy a toothbrush. By imitating the action of brushing one\'s teeth he successfully expresses himself to the shopkeeper and the purchase is done. Now if there is a blind man who wishes to buy a pair of sunglasses, how should he express himself?

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ANS:

He doesnt need to express by action...
a blind man can able to speak...
he ll go to d shop nd ask for a pair of sunglasses...

7. A woman gives a beggar 50 cents, the woman is the beggar's sister, but the beggar is not the woman's brother. How come?

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ANS:

The beggar is also a women...
so she ll not be women's brother...
rather she is women's sister...

8. The day before yesterday, Chris was 7 years old. Next year, she'll turn 10. How is this possible?

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ANS:

Today is Jan 1st...
Day before sday was dec 30th...
dec 31st she turned 8 years...
nd this year dec 31st , she ll turn 9 years...
nd next year she ll celebrate her 10th bday...

9. What goes up and down, but still remains in the same place?

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ANS:

staircase...

v can go up nd down using staircase., but it ll remain in the same place...

10. how to prove 0!=1

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ANS:

1! = 2!/2
2! = 3!/3
3! = 4!/4
similarly
n! = (n+1)!/(n+1)
so, 0! = 1!/1 = 1

(OR)

we know that n!=1*2*3...*(n-1)*n
n!=(n-1)!*n
n!/(n-1)!=n
put n=1
1!/0!=1
0!=1!/1=1
Thus proved

11. What is the lcm and hcf of
10/21, 1/2, 5/7

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ANS:
LCM in case of fraction = LCM of Numerator terms / HCF of Denominator terms

Similarly HCF in case of fraction = HCF of Numerator / LCM of Denominator terms

therefore LCM = LCM of (10,1,5) / HCF of (21,2,7)
= 10 / 1
=10

HCF = HCF of (10,1,5) / LCM of (21,2,7)
= 1 / 42

12. Divide the 12 hour clock in 3 parts such tat summation of 3 parts must be equal

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ANS:
I think Parts of clock should be properly divided as per number position on clock.

1,2,11,12...; sum =26
3,4,9,10; sum =26
5,6,7,8; sum =26

13. What is the difference between Verilog and C?

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ANS:

verilog is used for hardware description language for designing of digital circuits.....
whereas c is used for software description language for programming....

14. Suppose there are 100 gates for going in and out,first dog open the 1st,2nd, 3rd upto 100, second dog changes the pattern of 2 ,4, 6...100, 3rd dog changes the earlier pattern of 3,6,9....100 and its continue upto 100th dog , in the end which gate is open...

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ANS”

ans -100 as
1st dog 1 2 3 4 5 ......100
2nd dog 2 4 6 8........100
3rd dog 3 6 9 12........100
likely 5th dog 5 10 15 20....100
therefore 100th dog opens the 100th gate only

15. Prove that 15-6=10 without using any operations and modifications in the above expression.

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ANS:

15-6=10
=> 9=10
we can wriite them in roman number form,them(9=IX , 10=X)
=> IX=X
on multiplying both sides with 'V' (since 5=V)
=> V(IX)=V(X)
=> V(X-1)=V(XI-1)
=> VX-V=VXI-V
=> VX=VXI
=> (VX/VX)=I
=> 1=I
=> I=I
PROVED (LOGICALLY)

16. What will be next number in series.
3,6,7,12,13,18,19,24,?.
Options are-
(a) 31
(b) 32
(c) 33
(d) 34

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ANS:

Add 1 with alternate prime numbers

3
5+1=6
7
11+1=12
13
17+1=18
19
23+1=24
29
31+1=32


Ans : 32

17. cross+roads=danger then d+a+n+g+e+r=?

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ANS:
ans is 49

C=0
R=4
O=16
S=3
A=2
D=1
N=7
G=30
E=5
Therefore:
(CROSS + ROADS = DANGERS)        d+a+n+g+e+r = 1+2+7+30+5+4 = 49

18. 3,5,7,11,15,17,19......which is the next number

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ANS:

Difference between first and second number - 2
Difference between Second and third number - 2

Difference between third and fourth number - 4
.
.
.
.
Difference between seventh and eighth number - 4

19+4 = 23Ans

19. We get 0,0,0,0 .there are four zero's.we can use any one operator on that four zero's that the answer will be 24.

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ANS:

here is the soltn : (0!+0!+0!+0!)!=24

20. Q. What is the next number of the following sequence
31,28,31,30,31,30,31,31

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ANS:

Given sequence
31,28,31,30,31,30,31,31,.....

It's a sequence of number of days in a month of a year
January - 31 days
February - 28 days
March - 31 days
April - 30 days
May - 31 days
June - 31 days
July - 30 days
August - 31 days
similarly ;
september- 30 days

so answer will be 30 (option 2)