Which of the following determinants have value zero?

1. | 4 1 1 |
    | 7 9 7 |
    | 2 9 5 |

2. | 1 a b+c |
    | 1 b c+a |
    | 1 c a+b |

3. | 0 c b |
    | -c 0 a |
    | -b -a 0 |

Select the correct answer using the code given below.

Mathematics 2016 NDA Mathematics 2016 NDA 2016

Options