Question

If A23 divisible by 3 what is the possible value of A? 2 3 4 5

Answer 1

A23 / 3= ?
put A= 2
then 223/3 = 74.333...
put A= 3
then
$323 \div 3 = 107.66.....$
put A = 4
then 423/3= 141
here, 423 is duvisible by 3.
sothat, value of A is 4