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15 Jan 2019, 22:04
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E
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Difficulty:
65%
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Question Stats:
37% (01:09) correct
63%
(01:08)
wrong
based on 91
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A list of positive numbers 'L' has all integer values. What is the arithmetic mean of the numbers in this list?
(1) Least number in L is 12 and highest number in L is 15.
(2) There are four distinct values in L.
(1) Least number in L is 12 and highest number in L is 15.
(2) There are four distinct values in L.
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15 Jan 2019, 22:18
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From statement 1:
Least number in L is 12 and highest number is 15.
But, we don't the frequency of these and also we don't know how many numbers are there.
Hence 1 is Insufficient.
From statement 2:
Statement 2 is insufficient as it only mentions the number of numbers in set L.
Hence 2 is Insufficient.
Combining both:
The only possible set is 12, 13, 14, 15.
Hence sufficient.
C is the answer.
Least number in L is 12 and highest number is 15.
But, we don't the frequency of these and also we don't know how many numbers are there.
Hence 1 is Insufficient.
From statement 2:
Statement 2 is insufficient as it only mentions the number of numbers in set L.
Hence 2 is Insufficient.
Combining both:
The only possible set is 12, 13, 14, 15.
Hence sufficient.
C is the answer.
Updated on: 17 Jan 2019, 01:22
Originally posted by Archit3110 on 16 Jan 2019, 01:53.
Last edited by Archit3110 on 17 Jan 2019, 01:22, edited 1 time in total.
Last edited by Archit3110 on 17 Jan 2019, 01:22, edited 1 time in total.
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amanvermagmat
A list of positive numbers 'L' has all integer values. What is the arithmetic mean of the numbers in this list?
(1) Least number in L is 12 and highest number in L is 15.
(2) There are four distinct values in L.
(1) Least number in L is 12 and highest number in L is 15.
(2) There are four distinct values in L.
#1:
values in L can be repetitive or not
so in sufficient
#2:
it can be any integer value ; in sufficient
from 1 & 2
L = 12,13,14,15 or
L = 12,12,13,14,15
both sets of L have different mean/avg.
IMO E
