2=1!!!

Author Topic: 2=1!!!  (Read 852 times)

Offline shirin.ns

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2=1!!!
« on: March 30, 2014, 11:18:30 PM »
Let   a   =   b
Multiply both sides by a:   a2   =   ab
Add a2 - 2ab:   a2 + a2 - 2ab   =   ab + a2 - 2ab
Simplify:   2(a2 - ab)   =   a2 - ab
Divide by a2 - ab:   2   =   1

Oops!

What went wrong? It's the line which tells you to divide by a2 - ab. Since a = b, you have divided by zero, and this leads to the final incorrect statement.
« Last Edit: March 30, 2014, 11:22:00 PM by shirin.ns »
Shirin Sultana
Lecturer (Mathematics)
Dept. of General Educational Development (GED)
Daffodil International university

Offline Mosammat Arifa Akter

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Re: 2=1!!!
« Reply #1 on: March 31, 2014, 02:42:40 PM »
its very interesting
Mosammat Arifa Akter
Senior Lecturer(Mathematics)
General Educational Development
Daffodil International University

Offline smriti.te

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Re: 2=1!!!
« Reply #2 on: November 22, 2016, 12:43:23 AM »
Good post...