import math combination = 2 num = [4, 8] limit = 500 print("List of combinations of 4 and 8 upto 500:"); #iterate from 1 to limit for i in range(1, limit+1): copyNum = i count = 0 flag = 0 #check each digit starting from last digit while(copyNum != 0): count += 1 lastDigit = copyNum % 10 for j in range(0, combination): if(num[j] == lastDigit): flag += 1 copyNum = math.floor(copyNum / 10) if(count == flag): print(i, end=" ")