shaeby13
22.10.2020 •
Mathematics
What is the reciprocal of 3.5 and -0.07 too one decimal place
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Ответ:
We will use divisibility criteria.
Divisibility criteria for 3 : a natural number is divisible by 3 if the sum of its digits is a multiple of 3. Divisibility criteria for 9 : a natural number is divisible by 9 if the sum of its digits is a multiple of 9So, to find out if 186,426 is divisible by both 3 and 9, we first compute the sum of its digits. We have
Given that 27 is a multiple of 3 and 9, we conclude that 186,426 is divisible by both 3 and 9.