Uncategorized: Practice Problem & Solution

Short Solution (Best for NEET):

To solve this problem, we apply the core principles of Uncategorized. Understanding the underlying formula is key to arriving at the correct answer below:

Using the relation $a + r + t = 1$, we get $a = 1 - (r + t) = 1 - left(frac{1}{8} + frac{1}{7}right) = 1 - frac{15}{56} = frac{41}{56}$.