top button
Flag Notify
    Connect to us
      Facebook Login
      Site Registration Why to Join

    Get Free Puzzle Updates

Facebook Login
Site Registration

Find the mistake in these mathematical equations

0 votes
149 views

Find the mistake in these mathematical equations.
x = 2
x(x-1) = 2(x-1)
x2-x = 2x-2
x2-2x = x-2
x(x-2) = x-2
x = 1

posted Jul 10, 2014 by Deepak Negi

Looking for solution? Promote on:
Facebook Share Button Twitter Share Button Google+ Share Button LinkedIn Share Button Multiple Social Share Button




Similar Puzzles
+1 vote

Can you find digits that make equations true in the following alphametic puzzles (cryptarithms)?

RE + MI = FA
DO + SI = MI
LA + SI = SOL

0 votes

Using the numbers 1, 2, 2, 5, 6 & 7 in any order, can you find a mathematical expression with a result equal to 160?

The conditions are as follows;

You may use any of the four basic operation (which are addition, subtraction, multiplication & division).
You can also use parenthesis if needed.
You cannot repeat the numbers.
You cannot join the numbers together (eg: 1 & 2 as 12)

+1 vote

The following is my attempt at proving that 1<-1 . In which of these steps did I first make a mistake?
Step 1: Let i = sqrt(-1) then i^2 = -1 and i^4=1.
Step 2: Hence, we have i^2 < i^4
Step 3: We divide both sides by i to get i < i^3.
Step 4: We divide both sides by i again to get 1<i^2 or 1 < -1

+1 vote

Find all positive real solutions of the simultaneous equations:

x + y^2 + z^3 = 3
y + z^2 + x^3 = 3
z + x^2 + y^3 = 3
Contact Us
+91 9880187415
sales@queryhome.net
support@queryhome.net
#470/147, 3rd Floor, 5th Main,
HSR Layout Sector 7,
Bangalore - 560102,
Karnataka INDIA.
QUERY HOME
...