if a number is divisible by both 11 and 13 then it must be necessarily
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Since 11 and 13 are prime numbers. Therefore , If a number is divisible by both 11 and 13 then it must be necessarily divisible by the product of 11 and 13 . Therefore , If a number is divisible by both 11 and 13 then it must be necessarily divisible by (11 x13) or 143.
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odd and composite number
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