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

+3 votes
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I am a prime number. Double of myself is equal to the square if myself. Which number am I ?
posted Mar 2, 2018 by Amarvansh

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3 Answers

+2 votes

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, 2018 by Tejas Naik
+1 vote

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, 2018 by Parvind Kumar Singh
+1 vote

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

answer Mar 8, 2018 by Gangadharan Kv



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