| 1. | vector \((A\times B)\times C\) is not zero unless vectors \(B\) and \(C\) are parallel. |
| 2. | vector \((A\times B).C\) is not zero unless vectors \(B\) and \(C\) are parallel. |
| 3. | if vectors \(A,B\) and \(C\) define a plane, \((A\times B)\times C\) is in that plane. |
| 4. | \((A\times B). C= |A||B||C|\rightarrow C^2= A^2+B^2\) |
The incorrect statement/s is/are:
1. (b), (d)
2. (a), (c)
3. (b), (c), (d)
4. (a), (b)
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