Arul has 16 Apples, Raghav has 32 Apples, Ramesh has 48 Apples. The number of apples they possess forms an A.P with a common difference of
9
16
32
46
The number of apples Ram has is three less than half of the apple possessed by his friend Shyam. If Shyam has 'r' number of apples then the expression for the number of apples possessed by Ram is