Test 2135 is divisible by 7.(Apply divisibility rule)
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Answer:
2135/7=305
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Step-by-step explanation:
Remove the last digit, double it, subtract it from the truncated original number and continue doing this until only one or two digit remains. If this is divisible by 7, then the original number is divisible by 7.
213-10=203
20-6=14
14 is divisible by 7, so 2135 is divisible by 7
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