BREAKING: Target Test Prep releases Brand New 2026 On Demand GMAT prep course

Redeem

Median and Mean

This topic has expert replies
Post new topic Post Reply
Previous Topic Next Topic
Newbie | Next Rank: 10 Posts
Posts: 5
Joined: Sat Apr 04, 2009 7:21 am
Thanked: 1 times

Median and Mean

by thegr81 » Sat Jul 25, 2009 12:24 am
What is the median value of the set R, if for every term in the set, Rn = Rn–1 + 3?

(1) The first term of set R is 15.

(2) The mean of set R is 36.

Correct Answer is B
Top
Source: — Data Sufficiency |
Senior | Next Rank: 100 Posts
Posts: 38
Joined: Wed Jul 22, 2009 8:49 am
Thanked: 4 times

by rahulmehra13 » Sat Jul 25, 2009 12:56 am
Stmnt 1:

Insufficient
We just have the first no = 15
the series would be like 15,18,21,24,27 .. but we don't know whats the last number so can't calculate Median.

Stmnt 2:

Sufficient
Coz in an AP ( Rn = Rn-1 + 3), Median = Mean.
Mean is given, median will be the same i.e. 36.
Top
Post new topic Post Reply
• Page 1 of 1