Ques:- Jack and his wife went to a party where four other married couples were present. Every person shook hands with everyone he or she was not acquainted with. When the handshaking was over, Jack asked everyone, including his own wife, how many hands they shook. To his surprise, Jack got nine different answers. How many hands did Jack's wife shake?
Recent Answer : Added by Vaibhav Singh On 2022-03-09 16:41:50:
answer can be 1,2,3,4 can’t be determined exact number
just explaining a case:
there are 10 people in the party.
name of people no. of people with they made handshake list of those people(this can vary but showing the possibility)
1 1 9
2 2 8, 9
3 3 7, 8, 9
4 4 6, 7, 8, 9
5 5 6, 7, 8, 9. 10
6 6 4, 5, 7, 8, 9, 10
7 7 3, 4, 5, 6, 8, 9, 10
8 8 2, 3, 4, 5, 6, 7, 9, 10
9 9 1, 2, 3, 4, 5, 6, 7, 8, 10
10 4 5, 6, 7, 8, 9
jack got 9 different answer so jack can be either 4th number or 10th number and jack’s wife know jack very well so she can’t have handshake with jack so if 4th is jack then she can’t be handshake with 6,7,8,9, in this case she can be 1,2,3, 5, 10 and now depending upon which no is jack’s wife she can have hand shake with- 1- 4 people, and if jack is number 10 then she can’t be 5,6,7,8,9 so again depending upon her number she can handshake with people in range of 1-4
Ques:- A positive number when decreased by 2 is equal to 15 times the reciprocal of the number. What is the number ?
Recent Answer : Added by Abhi Chatterjee On 2022-01-08 16:05:35:
Let the number be x.
So x-2 =15/x, or
x^2–2x-15=0, or
(x-5)(x+3)=0
Hence x = 5 or -3.
Check: When x=5, 5–2=3 which is 15/5=3.
When x=-3, -3–2=-5 which is 15/-3=-5.
The number is 5 or -3.
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Ques:- A 5 litre jug contains 4 litres of a salt water solution that is 15 percent salt. If 1.5 litres of the solution spills out of the jug, and the jug is then filled to capacity with water, approximately what percent of the resulting solution in the jug is salt?
A. 7.5%
B. 9.5%
C. 10.5%
D. none
Recent Answer : Added by Admin On 2020-05-17 12:05:46:
5 litre jug contains 4 litres of salt water solution
with 15% of salt, that means it has 4000*.15 = 600 ml salt
in it.
If 1.5 litres solution is spills out, remaining solution
is 2.5 litres, then the salf content is 2500*.15 = 375ml.
Now, the jug is filled to full capacity with water i.e.,
now the jug has 5 litre solution in it.
Now, the salt content is 375/5000 = 7.5%
Ques:- Find the odd man out:
3, 5, 7, 12, 17, 19
A. 19
B. 17
C. 13
D. 12
Recent Answer : Added by Veeresh On 2022-08-14 16:35:30:
D.12
Ques:- A box contains 3 blue marbles, 4 red, 6 green marbles and 2 yellow marbles. If four marbles are picked at random, what is the probability that none is blue?
Ques:- 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? Plz explain..
Recent Answer : Added by 9074743593 On 2021-07-29 16:19:39:
30
Ques:- One student takes 20 mins to reach school if he goes at a speed of 15kmph .At what speed should he go to reach in 15 mins ?
Recent Answer : Added by DK BOSS On 2021-07-30 16:26:23:
1) time =20mins,speed=15kmph=15*(5/18)=25/6 m/sec
distance=20*(25/6)=250/3 m
then 2) given as time =15min
speed=250/3*15=(50/9)*(18/5)kmph=20kmph
Ques:- There is a die with 10 faces. It is not known that fair or not. 2 captains want to toss die for batting selection. What is the possible solution among the following?
A. a) If no. is odd it is head, if no. is even it is tail
B. b) vice versa...
Ques:- In an examination a student must answer 65% of the questions correctly. But it was found that after answer 7 questions corretly out of the first 14, the student qualified. What is the min no. of questions in the paper.
A. 22
B. 18
C. 20
D. Can't say
Recent Answer : Added by Admin On 2022-09-28 18:13:12:
C. 20
Ques:- The difference between simple and compound interests compounded annually on a certain sum of money for 2 years at 4% per annum is Re. 1. The sum (in Rs.) is?
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Ques:- Finish the series : 5,6,7,8,10,11,14,..?
Recent Answer : Added by Admin On 2022-09-29 17:21:33:
In the given series 5,6,7,8,10,11,14…
There are two series
First is 5,7,10,14…
Second is 6,8,11….
First series
5+2=7
7+3=10
10+4=14
Second series
6+2=8
8+3=11
11+4=15
Hence complete series is 5,6,7,8,10,11,14,15…
Ques:- what will be reminder after (16)^15 is devided by the 254…
A. 2
B. 0
C. 1
D. 128
Recent Answer : Added by Damodharan M On 2023-05-22 03:48:14:
I need a answers from hakuna matata questions
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Ques:- List the steps you would take in building up a team?
Recent Answer : Added by Shreya On 2022-04-02 06:59:33:
Collective performance
Postive attitude towards working
Shaping team player
Turning individuals into team players
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Ques:- The average temperature for Monday, Tuesday, Wednesday and Thursday was 48 degrees and for Tuesday, Wednesday, Thursday and Friday was 46 degrees. If the temperature on Monday was 42 degrees. Find the temperature on Friday?
Recent Answer : Added by Vigneshkarthik On 2022-05-17 09:07:59:
40
Ques:- A train 360 m long is running at a speed of 45 km/hr. In what time will it pass a bridge 140 m long?
Recent Answer : Added by George On 2021-06-10 07:10:11:
total distance to travel the end of the train = 360 + 140 = 500 m
speed of train 45000m/60min = 750m/min or 750m/60sec
(500m*60sec)/750m=40sec the time will take to pass
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Ques:- If PQRST is a parallelogram what it the ratio of triangle PQS & parallelogram PQRST
Recent Answer : Added by Admin On 2020-05-17 11:59:29:
1:2
Ques:- Three piles of chips–pile I consists one chip, pile II consists of two chips, and pile III consists of three chips–are to be used in game played by Anita and Brinda.The game requires: a)That each player in turn take only one chip or all chips from just one pile. b)That the player who has to take the last chip loses. c)That Anita now have her turn.From which pile should Anita draw in order to win?
Ques:- Can you explain why should we select you fromthe number of applications we have received?
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answer can be 1,2,3,4 can’t be determined exact number
just explaining a case:
there are 10 people in the party.
name of people no. of people with they made handshake list of those people(this can vary but showing the possibility)
1 1 9
2 2 8, 9
3 3 7, 8, 9
4 4 6, 7, 8, 9
5 5 6, 7, 8, 9. 10
6 6 4, 5, 7, 8, 9, 10
7 7 3, 4, 5, 6, 8, 9, 10
8 8 2, 3, 4, 5, 6, 7, 9, 10
9 9 1, 2, 3, 4, 5, 6, 7, 8, 10
10 4 5, 6, 7, 8, 9
jack got 9 different answer so jack can be either 4th number or 10th number and jack’s wife know jack very well so she can’t have handshake with jack so if 4th is jack then she can’t be handshake with 6,7,8,9, in this case she can be 1,2,3, 5, 10 and now depending upon which no is jack’s wife she can have hand shake with- 1- 4 people, and if jack is number 10 then she can’t be 5,6,7,8,9 so again depending upon her number she can handshake with people in range of 1-4