Question:
Very-Short and Short-Answer Questions
If 18, a, (b − 3) are in AP, then find the value of (2a − b).
Solution:
It given that 18, a, (b − 3) are in AP.
$\therefore a-18=(b-3)-a$
$\Rightarrow a+a-b=18-3$
$\Rightarrow 2 a-b=15$
Hence, the required value is 15