Question

For how many positive integral values of x ≤100 is ( 3^x - x ^2) is divisible by 5 ? a. 16 b. 20. c.24. d.36​

Answer 1

divisible by 5 are 10a)16,15,20,25,30,35,40,45,50,55,60,65,70,75,80,85,90,95