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

Redeem

1000 series ps

This topic has expert replies
Post new topic Post Reply
Previous Topic Next Topic
User avatar
Newbie | Next Rank: 10 Posts
Posts: 4
Joined: Fri Jan 29, 2010 8:12 am

1000 series ps

by GRV99 » Sat Sep 17, 2011 12:24 pm
value of 4√496 (read 4 as power to square root sign,sorry i don't know how to write it) is between
(A) 3 and 4
(B) 4 and 5
(C) 5 and 6
(D) 6 and 7
(E) 7 and 8
[spoiler]OA:B[/spoiler]
Top
Source: — Problem Solving |
Legendary Member
Posts: 966
Joined: Sat Jan 02, 2010 8:06 am
Thanked: 230 times
Followed by:21 members

by shankar.ashwin » Sat Sep 17, 2011 12:29 pm
There are many ways to approach this problem, but if you familiar with numbers,

you probably know, 5^4 = 25^2 = 625 and

4^4 = 16^2 = 256.

So its clearly between 4 and 5
Top
User avatar
Newbie | Next Rank: 10 Posts
Posts: 4
Joined: Fri Jan 29, 2010 8:12 am

by GRV99 » Sun Sep 18, 2011 12:19 am
thanx rising star....i didn't think it that way..sumtimes core logic is better than core math.
Top
Post new topic Post Reply
• Page 1 of 1