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

    Get Free Puzzle Updates

Facebook Login
Site Registration

I am a prime number. Double of myself is equal to the square if myself. Which number am I ?

+2 votes
125 views
I am a prime number. Double of myself is equal to the square if myself. Which number am I ?
posted Mar 2 by Amarvansh

Share this puzzle
Facebook Share Button Twitter Share Button Google+ Share Button LinkedIn Share Button Multiple Social Share Button

3 Answers

+1 vote

2X = X^2
X^2 - 2X = 0
X(X - 2)=0
X = 0, 2
So the answer is 2 (because its a prime) and not 0.

answer Mar 2 by Tejas Naik
0 votes

2 is also prime number
when, we double this is equal to 4
if, we square its is equal to 4
so, required answer is 2

answer Mar 3 by Parvind Kumar Singh
0 votes

answe----------------- two

answer Mar 8 by Gangadharan Kv



Similar Puzzles
0 votes

If 1^3 + 2^3 + 3^3 = m^2 where m is also an integer.
What are the next three consecutive positive integers such that the sum of their individual cubes is equal to a perfect square?

0 votes

I am a number with the following properties:
* If I am not a multiple of 4, then I am between 60 and 69.
* If I am a multiple of 3, I am between 50 and 59.
* If I am not a multiple of 6, I am between 70 and 79.
What number am I?

Contact Us
+91 9880187415
sales@queryhome.net
support@queryhome.net
#280, 3rd floor, 5th Main
6th Sector, HSR Layout
Bangalore-560102
Karnataka INDIA.
QUERY HOME
...