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

Redeem

number properties

This topic has expert replies
Post new topic Post Reply
Previous Topic Next Topic
Source: — Problem Solving |
User avatar
Community Manager
Posts: 1060
Joined: Fri May 13, 2011 6:46 am
Location: Utrecht, The Netherlands
Thanked: 318 times
Followed by:52 members

by neelgandham » Sun Jan 29, 2012 1:35 pm
3 possibilities 1,5, and 6

1^4 = 1
2^4 = 16
3^4 = 9*9 = 81
4^4 = 16*16 = A number with unit's digit - 6
5^4 = 25*25 = A number with unit's digit - 5
6^4 = 36*36 = A number with unit's digit = 6
7^4 = 49*49 = A number with unit's digit = 1
8^4 = 64*64 = A number with unit's digit = 6
9^4 = 81*81 = A number with unit's digit = 1

and all numbers with unit digits 1,2,3,4,5,6,7,8,9 follow the same pattern.
Anil Gandham
Welcome to BEATtheGMAT | Photography | Getting Started | BTG Community rules | MBA Watch
Check out GMAT Prep Now's online course at https://www.gmatprepnow.com/
Top
Post new topic Post Reply
• Page 1 of 1