Question

Hey ....!Is 123456789 Divisible by 27 and 81....??
(And Don't Answer that Sorry I don't know the Answer ... Answer only if u know..No Random Talk..)​

Answer 1

Answer:

No

123456789 is not divisible by 27 and 81

because divisiblity rule doesn't hold good

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Answer 2

Answer:

No, 123456789 is Not Divisible by 27 or 81.

This Is Because,

When we Divide 123456789 by 27, the answer is 4572473.66667 (approx.). As there is Decimal, it is Not Perfectly Divisible.

When we Divide 123456789 by 81, the answer is 1524157.88889 (approx.). As there is Decimal, it is Not Perfectly DIvisible.

It is based on the observation that 27 × 4 = 108 = 100 + 8, and therefore that 100 ≡ −8 (mod 27). Let a be the hundreds digit of n and let b be the two-digit number formed by the remaining two digits (i.e., the tens digit and the units digit) of n. ... Then n is divisible by 27 if and only if n1 is divisible by 27.

For those who remember the rules that a number is divisible by 3 and 9 if and only if (iff) the sum of its digits is divisible by 3 or 9, respectively, it's tempting to assume that the same applies to 81. That is a number is divisible by 81 iff the sum of its digits is divisible by 81.

Also The Divisibility Rules are Not Applicable.

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