Description : What is the rule of divisibility of ?
Last Answer : If the last digit of a number is multiplied by 9 and subtracted from the remainder, the result must be multiplied by 7. For example: 483 , 48- (3 x 9) = 21 = 3 x 7 If we do, the result must be a multiple of 7. For ... to it, the sum must be a factor of 7. For example: 483 , 48+ (3 x 5) = 63 = 9 x 7