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Mathematics 79 Online
OpenStudy (mayah3):

Can someone help with my Please?! State whether each number is divisible by 2, 3, 5, 9, 10, or none. 1. 30 (1 point) 2, 10 2, 3, 5, 10 2, 3, 10 none 2. 54 (1 point) 9 2 2, 3, 9 none 3. 48 (1 point) 2, 3 2, 3, 9 2 none 4. 2,583 (1 point) 3 9 3, 9 none

OpenStudy (unklerhaukus):

1. 30; 2,3,5,10 2. 45; 2,3,9 3. 48; 2,3 4. 2583; 3,9

OpenStudy (anonymous):

If a whole number ends in 2,4,6,8,0 it's divisible by 2; If it ends in a 5 or a 0, it's divisible by 5 If it ends with a 0, it's divisible by 10 (also 2 and 5) If the sum of the digits is divisible by 3, the number is divisible by 3 If the sum of the digits is divisible by 9, so is the number (also divisible by 3)

OpenStudy (unklerhaukus):

is there a rule for if a number is divisible by seven?

OpenStudy (anonymous):

There is but I can't remember it. I just use long division if it's too big a number.

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