Varun has a ₹10 currency note with him. He purchases a pen for ₹6. The shopkeeper returns the balance amount to him using only ₹1 and ₹2 coins. If Varun receives at least one coin of each denomination, what is the total number of coins he receives?

A group of boys went for trekking. They had a definite pattern for the schedule of trekking. If they went for trekking in the morning, they were free in the afternoon and vice-versa. They trekked for 16 days altogether and had 10 free mornings and 12 free afternoons. What was the duration (in days) for their trekking?

A bank clerk accepts a 2 percent illegal commission under the table for processing housing loans. The clerk processes 10 loans of 30 lakh rupees each. An internal audit discovers this and imposes a fine equal to 5 times the total illegal commission received. Calculate the total fine the clerk must pay and the net financial loss suffered compared to taking no bribe.