चार अंकों की एक संख्या 4ba5, 55 से पूर्णतः विभाज्य है। तो (a - b) का मान क्या है?

If the 7-digit number 44650A6 is completely divisible by 3, what will be the minimum value of A?

A number is divisible by 11 if:

The value of the digit 'a' such that the number 84a16 is divisible by 9 is: