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NDA Math Determinants

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Question : 7

Total: 68

Under which of the following conditions does the determinant |

a	b	c
b	c	a
c	a	b

| vanish ?
1. a+b+c=0
2. a3+b3+c3=3abc
3. a2+b2+c2−ab−bc−ca=0
Select the correct answer using the code given below :

1 and 2 only
2 and 3 only
. 1 and 3 only
1,2 and 3

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