How many 2-digit numbers are not divisible by 13
How many 2-digit numbers are not divisible by 13
Гость
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Гостьэто на английском? напиши на русском я вроде в математике разбираюсь!
Гостьtwo-digit numbers start from 10 and go up to 99, so there's 89 two-digit numbers.
if you'd try to figure out how many of them ARE divisible by 13, you'd get a 7.
so 89-7=82
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