Adrian A.

asked • 09/22/17

Question is in the desciptions

Jay has 9 cupboards with the numbers 1 to 9 written. He has to form 3 three-digit numbers which are divisible by 9 with these cardboards and arrange them in ascending order. In how many different ways can he form these three digit numbers?

Mark M.

Hint: a number is divisible by 9 if the sum of digits is divisible by 9.


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