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
Options:
A . 183654729
B . 381654729
C . 983654721
D . 981654723
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
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