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21 is not divisible by 2 nor 5, but it is divisible by 3.
To be divisible by 2 the last digit must be even (one of {0, 2, 4, 6, 8}; the last digit 1 is not one of these, thus 21 is not divisible by 2
To be divisible by 3 sum the digits and if this total is divisible by 3, then so is the original number; the test can be repeated on the sum, so by repeatedly summing the digits of the totals until a single digit remains only if that single digit is 3, 6 or 9 is the original number divisible by 3. 21 → 2 + 1 = 3 which is divisible by 3 so 21 is divisible by 3.
To be divisible by 5, the last digit must be 0 or 5. The last digit of 21 is 1 which is not 0 nor 5, thus 21 is not divisible by 5.
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Is 2685 divisible by 2 3 5 9 10?
2-no3-yes5-yes9-no10-noBut plz check, 'cuz i checked in my calculator but i'm not that sure anyway this is what i got for each2-1,342.53-8955-5379-298.33333310-268.5Again plz check anyway 'cuz if ur checking for ur homework- i warned you so don't say it's my fault if you get it wrong O_o?(I waz the one who wrote this) 00MusicIsLife00 = ID 167189390
Is 432 divisible by 2 3 5 9 or 10?
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