A 9 digit number in which zero does not appear and no digits are repeated has the following properties: The number comprising the left most two digits is divisible by 2, that comprising the left most three digits is divisible by 3, and so on

Answer: Option B

(a) In 183654729, 1836547 is not divisible by 7
(b) In 381654729, 38 is divisible by 2,
381 is divisible by 3,
3816 is divisible by 4,
38165 is divisible by 5,
381654 is divisible by 6,
3816547 is divisible by 7
38165472 is divisible by 8 and 381654729 is divisible by 9
(c) In 983654721, 983 is not divisible by 3
(d) In 981654723, 9816547 is not divisible by 7