यदि `3(a^(2)+b^(2)+c^(2))=(a+b+c)^(2)` है तो `a,b` और `c` के बीच क्या संबंध है?

Options

A. `a=b!=c`
B. `a!=c!=c`
C. `a!=b=c`
D. `a=b=c`

Answer

D

Explanation

Shortcut Method
Always do these types of question with the help of
Put `a=b=c=1`
`3(1^(2)+1^(2)+1^(2))=(a+b+c)^(2)`
`3=3` satisfied
So this is answer `to a=b=c`