# State whether the expression is meaningful. If not, explain why? If so, state whether it is a vector or a scalar: abca¯.b¯+c¯ - Mathematics and Statistics

Sum

State whether the expression is meaningful. If not, explain why? If so, state whether it is a vector or a scalar:

bar"a". bar"b" + bar"c"

#### Solution

This is the sum of scalar and vector which is not defined. Therefore, this expression is meaningless.

Concept: Vectors and Their Types
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