How many possible words can be created from the letters R, A, N, D (with repetition)?
Let R = {(1, 2), (2, 3), (3, 3)} be a relation defined on the set \( \{1, 2, 3, 4\} \). Then the minimum number of elements needed to be added in \( R \) so that \( R \) becomes an equivalence relation, is:}
What is the angle between the hour and minute hands at 4:30?
Mantri Mandir -- Where is it located?
What architectural structure balances the bridge weight? (Refer to the image of a truss bridge)