You are Tanya/Tanmay of 58, S.K. Nagar, A.K. Town, Veershahar. Write a letter to the editor of a national daily expressing your concern over the issue and stressing the importance of teaching children how to deal with cyberbullying.
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?