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A number is divisible by
if
2
it ends in 0, 2, 4, 6, or 8
3
the sum of its digits is divisible by 3
4
the number formed by the last two digits is divisible by 4
5
it ends in 0 or 5
6
it is divisible by 2 and 3 (use the rules for both)
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Unformatted text preview: 7 (no simple rule) 8 the number formed by the last three digits is divisible by 8 9 the sum of its digits is divisible by 9...
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This note was uploaded on 11/09/2011 for the course MATH 1310 taught by Professor Staff during the Fall '07 term at Texas State.
 Fall '07
 staff

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