An audit sheet is used to track and verify the inventory of sports equipment. It ensures accountability, keeps a record of available stock, and prevents loss or misuse of resources.
- Option (a): A note sheet is for informal notes or communication.
- Option (c): A balance sheet summarizes financial assets and liabilities.
- Option (d): A cash flow statement tracks cash inflow and outflow.
Thus, an audit sheet is the correct tool for inventory management.
Assertion (A): The sum of the first fifteen terms of the AP $ 21, 18, 15, 12, \dots $ is zero.
Reason (R): The sum of the first $ n $ terms of an AP with first term $ a $ and common difference $ d $ is given by: $ S_n = \frac{n}{2} \left[ a + (n - 1) d \right]. $
Assertion (A): The sum of the first fifteen terms of the AP $21, 18, 15, 12, \dots$ is zero.
Reason (R): The sum of the first $n$ terms of an AP with first term $a$ and common difference $d$ is given by: $S_n = \frac{n}{2} \left[ a + (n - 1) d \right].$