Aptitude - Average - Discussion
Discussion Forum : Average - General Questions (Q.No. 4)
4.
The average of 20 numbers is zero. Of them, at the most, how many may be greater than zero?
Answer: Option
Explanation:
Average of 20 numbers = 0.
Sum of 20 numbers (0 x 20) = 0.
It is quite possible that 19 of these numbers may be positive and if their sum is a then 20th number is (-a).
Discussion:
135 comments Page 5 of 14.
Amit said:
1 decade ago
0+0+0+0+0+0+0+0+0+0+0+0+0.....up 2 18th term
than
+100-100...
Wats gonna b answer ...my dear frns answer is 1.
than
+100-100...
Wats gonna b answer ...my dear frns answer is 1.
Arafat said:
1 decade ago
Write a java program which will print sum of 5 numbers but each number should not be more than 12. Help any1 plz!!!!!!!
Nilesh said:
1 decade ago
Dear read Tarun is right,the question carefully.
The question ask "at the most".
So you have to give maximum numbers that can be positive,.
And that is 19.
The question ask "at the most".
So you have to give maximum numbers that can be positive,.
And that is 19.
Anu said:
1 decade ago
Thank you tarun.
I can understand your explanation.
I can understand your explanation.
Laxmi said:
1 decade ago
Thank you king praba. Your explanation was good.
Ameer said:
1 decade ago
We have to atmost possible values to get sum is zero.
Let 19 num are from 1 to19 &their sum is 190 if we have 20th num as -190 we get total sum is zero.so avg is also zero.
We can have positive num whose range is {1<=num<=19}.hope u will understand.
Let 19 num are from 1 to19 &their sum is 190 if we have 20th num as -190 we get total sum is zero.so avg is also zero.
We can have positive num whose range is {1<=num<=19}.hope u will understand.
Ameer said:
1 decade ago
We can't get sum zero with out a -ve number. The cases are
Pos Neg
1 19
2 18
and so on..
19 1
Here he given that max +ve values to get sum is zero soa ans is 19.
Pos Neg
1 19
2 18
and so on..
19 1
Here he given that max +ve values to get sum is zero soa ans is 19.
Sree said:
1 decade ago
Am not clear vth above answers. Still I'm in dilemma. ?
Abhay said:
1 decade ago
Praveen answer is the best one to understand this problem.
Good praveen.
Good praveen.
Harish said:
1 decade ago
How can an age can be negative?
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