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प्रश्न
State whether the expression is meaningful. If not, explain why? If so, state whether it is a vector or a scalar:
`bar"a" xx (bar"b".bar"c")`
उत्तर
This expression is meaningless because `bar"a"` is a vector, `bar"b"· bar"c"` is a scalar and vector product of vector and scalar is not defined.
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