Question:
$(x+y) / 2$ is a rational number
(a) Between x and y
(b) Less than x and y both
(c) Greater than x and y both
(d) Less than x but greater than y
Solution:
(a) Between $x$ and $y$
Let us assume the value of $x$ and $y$ is 4 and 8 respectively
Then,
$=(4+8) / 2$
$=12 / 2$
$=6$
Hence, the value 6 is lies between 4 and 8 .