Two advantages of in-service teachers’ training are:
Skill Enhancement: Training equips teachers with modern pedagogical tools, improving teaching quality and student outcomes.
Adaptation to New Trends: Teachers stay updated with the latest developments in education, ensuring relevance in the curriculum.

If vector \( \mathbf{a} = 3 \hat{i} + 2 \hat{j} - \hat{k} \) \text{ and } \( \mathbf{b} = \hat{i} - \hat{j} + \hat{k} \), then which of the following is correct?