Question

If the 8-digit number 136X5785 is divisible by 15, then find the least possible value of x?​

Answer 1

Answer:

mainly answer is 1 because the prime factorisation of 15 is 3 and 5 .So, the method for 3 is sum of all numbers and for 5 is we need 0 and 5 at last to divide the number for 5 . And we have 5 at last so we have to sum of all numbers and sum is and here X means 0 now , 1+3+6+0+5+7+8+5=35 so divide it with 3 add 1 and sum will be 36 answer will be 1.