Adam has RM2010 in his bank account. He donates RM10 to charity every day. His first donation is on Monday. On what day will he donate his last RM10?
1. Adam has RM2010 in his bank account and donates RM10 to charity every day. Therefore, the total number of days he can donate is:
   \[
   \frac{2010}{10} = 201 \text{ days}
   \]

2. Adam starts his donations on Monday. We need to determine the day of the week on which he will make his 201st donation. To do this, we calculate the remainder when 201 is divided by 7 (since there are 7 days in a week):
   \[
   201 \mod 7
   \]

3. Perform the division:
   \[
   201 \div 7 = 28 \text{ remainder } 5
   \]
   Therefore,
   \[
   201 \mod 7 = 5
   \]

4. Since Adam starts donating on Monday, we count 5 days from Monday:
   \[
   \text{Monday} + 5 \text{ days} = \text{Saturday}
   \]

Thus, Adam will make his last donation on a Saturday.

The final answer is \(\boxed{\text{Saturday}}\).