My Math Forum  

Go Back   My Math Forum > High School Math Forum > Algebra

Algebra Pre-Algebra and Basic Algebra Math Forum

LinkBack Thread Tools Display Modes
December 1st, 2014, 03:12 PM   #1
Joined: Jul 2014
From: Sheffield

Posts: 10
Thanks: 0

Does Anyone answer to this?

Really do not understand this question, if anyone knows the answer it would be great help. whoever knows the answer could you tell me why & how you got the answer.


If x is a natural number (i.e., x ∈ N), all but one of the following mean the same thing (i.e., give the same condition on x). Write down the letter corresponding to the odd one out which does not mean the same as the others.
(A) x² < 2
(B) x ∈ {0,1}
(C) x=0 ∨ x=1
(D) 0≤x ∧ x≤1
(E) {x} ⊆ {0,1}
(F) 1 ∈ {1,x}
(G) 0 ≤ x ≤ 1
(H) x̸=0 ⇒ x=1


Last edited by skipjack; December 1st, 2014 at 07:42 PM.
thomas2608 is offline  
December 1st, 2014, 04:12 PM   #2
Math Team
Joined: Dec 2013
From: Colombia

Posts: 7,600
Thanks: 2588

Math Focus: Mainly analysis and algebra
F looks rather different to me.
v8archie is offline  
December 1st, 2014, 06:12 PM   #3
Senior Member
Joined: Jan 2014
From: The backwoods of Northern Ontario

Posts: 390
Thanks: 70

I agree that it's F.

All of the others imply that either x=0 or x=1. But in F, x could equal any natural number greater than 1.
Timios is offline  
December 1st, 2014, 07:55 PM   #4
Global Moderator
Joined: Dec 2006

Posts: 20,310
Thanks: 1978

F (because that condition is satisfied for every natural number, not just 0 and 1)
skipjack is offline  

  My Math Forum > High School Math Forum > Algebra


Thread Tools
Display Modes

Similar Threads
Thread Thread Starter Forum Replies Last Post
Can you answer this? theturk Algebra 1 January 25th, 2014 06:21 PM
WHat is the answer for this ? saravananr Algebra 1 January 5th, 2013 07:28 AM
How do you get this answer 1 + AB/A+B + (A-1/A) = A (B + 1) jon Algebra 14 October 17th, 2012 05:41 PM
numeric entry problem with answer..but I think the answer is rage Algebra 2 September 14th, 2012 10:27 PM
Please answer for me tobymac Algebra 12 May 23rd, 2009 07:19 PM

Copyright © 2019 My Math Forum. All rights reserved.