A vendor supplies 72 litres of milk to a student's hostel in the morning and 28 litres of milk in the evening every day. If the milk costs ₹ 60 per litre, how much money is due to the vendor per day?

State whether the following statements are true (T) or false (F):

(i) If the product of two whole numbers is zero, then at least one of them will be zero.

(ii) If the product of two whole numbers is 1, then each of them must be equal to 1.

(iii) If a and b are whole numbers such that a ≠ 0 and b ≠ 0, then ab may be zero.

Replace each * by the correct digit in each of the following:

$\begin{matrix} & 6 & 5 & 0 & \ast \ - & \ast & 0 & \ast & 5 \ \hline & 4 & \ast & 5 & 7 \ \hline \end{matrix}$

Replace each * by the correct digit in each of the following:

$\begin{matrix} & 1 & 7 & 0 & 0 & \ast & 4 \ - & & 8 & \ast & \ast & 4 & 7 \ \hline & & \ast & 8 & 6 & 6 & \ast \ \hline \end{matrix}$